- Did you saw Nam last Sunday? - Oh no. I wasn't seen him for many days
- How long have you live in this town? - I has lived in this town for ten years
- My sister finished school in 2009 and was a student at the National University since then
- They weren't spoken to each other since they met
- He was here before she gone
- He written a novel for two years, but he finished it yet
- I weren't been here in June
- I think she was passed the exam
- I need some money- Don't worry I will lend you some
- I promise I phone you as soon as arrive in New York
- I wasn't seen him since last Mondayt
- His health was improved since he was left India
- He didn't do his homework at 7 o'clock yesterday
- This company spends a lot of money on advertising every year
- If the weather is fine, we will go camping next week
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Past simple tense
1. Bill ...was. ( be ) born in 1980
2. They ..built.. ( build ) this house 2 years ago
3. Lan and Hoa ..didn't go.. ( not/ go ) to school yesterday
4. Mai ..left.. ( leave ) school last years
5. ..Did you visit.. ( you/ visit ) your grandmother last night ?
6. What .did he buy... ( he/ buy ) last week ?
ll. Present perfect tense
1. They (not speak) haven't spoken… to each other since they quarelled.
2. I wonder where he (live) has lived… since then.
3. You have already (drink)drunk… three cups of tea since I sat here.
4. I (wait) …have waited here for her since 7 o’clock and she (not come) hasn't come… yet.
5. John (do) has done… his homework already.
6. We (go) have gone… on a picnic in the countryside several time before.
7. I (not see) …haven't seen him today.
8. How much have you (pay) …paid for it?
9. Has She (feed) …fed the cat yet?
10. have They (do) done… their homework?
11. have You (find) found… your book?
12. have You (be) …been here before?
13. She (use) …has used this car for 5 years.
14. Someone (take) has taken… my bike.
15. He isn’t here. He (go) has gone… to Canada.
16. He (lose) has lost… his key.
17. I (not work) haven't worked… since last week.
18. We (buy) …have bought a new lamp.
19. We ( not/ plan ) haven't planned… our holiday yet/
20. Where (be/ you) have you been…?
1.They have just decided (decide) to buy a new house.
2."Gone with the Wind" is the most interesting film we have seen ( see) recently.
3.Did you see (see) Nam last Sunday? Oh, no I haven't seen (not see) him for many days now.
4.Since when have you learnt (learn) E? I have learnt (learn) it since I was( be) a girl of twelve.
5. Have you ever been (be) to HCM city? -No, I haven't been (not be) there yet. But my parents have been (be) there twice this year.
6.They have done (do) nothing since they got (get) up.
7.My brother joined (join) the army when he was ( be) 18. He has served (serve) in the army for 3 years and then went (go) to universiy.
8.How long have you lived (live) in this town? -I have lived (live) in this town for ten years.
9.My sister finished (finish) school in 1997 and has been (be) a student at the National University since then.
10.My parents have gone (go) out.They will be back soon.
1.They have just decided (decide) to buy a new house.
2."Gone with the Wind" is the most interesting film we have seen ( see) recently.
3.Did You see (see) Nam last Sunday.?
Oh, no I have not seen (not see) him for many days now.
4.Since when have you learnt (learn) E?
I have learnt (learn) it since I was ( be) a girl of twelve.
5.Have You ever been (be) to HCM city?
-No, I have not been (not be) there yet. But my parents were (be) there twice this year.
6.They did (do) nothing since they got (get) up.
7.My brother joined (join) the army when he was ( be) 18.
He has served (serve) in the army for 3 years and then went (go) to universiy.
8.How long have you lived (live) in this town?
-I have lived (live) in this town for ten years.
9.My sister finished (finish) school in 1997 and was(be) a student at the National University since then.
10.My parents have gone (go) out.They will be back soon.
XI. Supply the correct verb forms.
1. I (see) HAD SEEN a car accident while I (wait) HAD BEEN WAITING for you on this corner yesterday.
2. Mr. john (be)HAS BEEN principal of our school since last year.
3. Mr. Smith (teach) HAS TAUGHT at this school since he (graduate) GRADUATED in 1980.
4. My father (not watch) DOENS'T WATCH TV every night.
5. I (meet) MET Authur three weeks ago.
6. Yesterday the police (report) REPORTED that they (capture) HAD CAPTURED the thief.
7. My friend (thank) THANKED me for what I had done for him.
8. Someone (steal) STOLE my handbag on the bus.
9. The Browns (live) WERE LIVING in Paris for 7 years when the second World War (break) BROKE down.
10. Last month I (be) HAD BEEN in the hospital for ten days.
11. Don't call me in the afternoon. I usually (be) AM away in the afternoon.
12. Mr. Clark (be) WAS in New York 2 months ago. Mr. Rossi (be)HAD BEEN in New York until 2 months ago.
13. John (drive) HAS DRIVEN that car ever since I (know) KNEWhim.
14. People (speak ) SPEAK English in most of Canada.
15. The dog (wag)WAGS his tail whenever he (see)SEES me.
16. What WERE you (do) DOING when I (ring) RANGyou last night?
17. Up to then I HAD never (see) SEEN such a fat man.
18. I (not see) DIDN'T SEE him last Monday.
19. They had sold all the books when we (get) GOT there.
20. I think he (leave) WILL LEAVE as soon as he (know) KNOWS the news.
21. She (play)WAS PLAYING the piano when our guests (arrive) ARRIVED last night.
22. He (come) WILL COOME and (see) SEE you soon.
23. I (come) as soon as I have finished my work. ARE You (be) ready?
24. My mother (come) IS COMING to stay with us next weekend.
25. Where WILL you (spend) SPEND your holidays next summer?
26. Violets (bloom) BLOOM in spring.
27. We (not live) HAVEN'T BEEN LIVING in England for two years now.
28. I (never forget) WILL NEVER FORGET what HAVE you (just tell) JUST TOLD me.
29. They (prepare) ARE PREPARING the Christmas dinner at the moment.
30. When I last (stay) STAYED in Cairo, I (ride)RODE to the Pyramids on a camel that my friend (borrow) HAD BORROWED the day before.
31. Our teacher (tell) TOLD us yesterday that he (visit) VISITED England in 1970.
32. George (work) HAS WORKED at a university so far.
33. When he lived in Manchester, he (work)WAS WORKING in a bank.
34. Birds (build) BUILD their nests in summer and (fly) FLY to the South in winter.
35. I (lose) HAVE LOST my key. (Can) CAN you help me look for it?
36. My father (not smoke) HASN;T SMOKED for 5 years.
37. My teacher wasn't at home when I (arrive)ARRIVED . He (just go) HAD JUST GONE out.
38. How long HAVE Bob and Mary (be) BEEN married?
39. HAVE You (receive)RECEIVED any letter from your parents yet?
40. My brother (join)JOINED the army when he (be) WAS young.
41. WILL You (remember) REMEMBER my name or you (forget) FORGET it someday?
42. Tom (study) HAD BEEN STUDYING chemistry for three years and then he gave it up.
43. Miss Lee often (write) WROTE when she was on holiday.
44. He (leave)LEFT home two weeks ago and we (not hear) HAVEN'T HEARD from him since then.
45. DID You (speak) SPEAKto Mrs. Baker yesterday? No, I (not see) HAVEN'T SEEN her for a long time. I (not can) COULDN'T remember when I last (see)SAW her.
46. When the teacher came in, the pupils (play) WERE PLAYING game.
47. Columbus (discover) DISCOVERED America more than 400 years ago. 7
48. By next month, I (finish) WILL HAVE FINISHED my first novel.
49. By May 5, we (live) WILL HAVE LIVED in this city for ten years.
50. When DID your father (die)DIE? I (not kow)DIDN'T KNOW when he (die) DIED.
51. Bill said he (forget) HAD FORGOTTEN to buy a dictionary.
=>BN AN MAY CAU NAY CHAC CX MOI LAM NHIR???
52. He felt asleep while he (do) WAS DOING his homework.
53. We (not see) HAVEN'T SEEN them for a long time.
54. It (rain)WAS RAINING when we arrived.
55. Kite and I (wait) WILL WAIT right here until you get back.
56. He'll leave as soon as he (hear) HEARS the news.
57. Dick (start)HAD STARTED school before he WASseven.
58. How long HAVE you (study) BEEN STUDYING in this school?
59. We (not receive)HAVEN'T RECEIVED any letter from him since he (leave)LEFT four months ago.
60. Where are you? I'm upstairs. I (have)AM HAVING a bath.
61. I (speak) WILL HAVE SPOKENto you about that matter after the meeting tonight.
62. At this time next week, we (live)WILL BE LIVING in USA.
63. Hurry up! The train (come)IS COMING.
64. Be quiet! The teacher (be)IS angry.
65. Why didn't you listen while I (speak)WAS SPEAKING to you?
66. Some animals (not eat) DON'T EATduring winter.
67. I (finish) WILL HAVE FINISHED the book before my next birthday.
68. John (watch) WAS WATCHING TV at 8 last evening.
69. Mr. Pike (live) HAS LIVED here since last October.
70. Someone (cut) HAD CUT down all the trees in the garden. 8
71. The house (build) WAS BUILT two years ago.
72. Listen! The bird (sing).ARE SINGING
73. Trees (plant)HAVE BEEN PLANTED since it (stop) STOPPEDraining.
74. Tom Baker (not come) WON'T COME here tomorrow.
75. By the end of last March, I (study)HAD STUDIED English for 5 years.
76. He often (say) SAID O.K when he (talk)WAS TALKING with the guests.
77. What DID you (do) DO after you (go)HAD GONE home yesterday?
78. How long you (wait) for me? Just a few minutes.
79. He (do)HAD DONE his homework before he went to the cinema.
80. By noon, I (wait) WILL HAVE BEEN WAITING for her for two hours.
81. By the time you come there, she (make)WILL HAVE MADE a big cake.
82. Yesterday thieves (break) BROKEinto the house and (steal) STOLE a lot of fur coats while the guests (dance)WERE DANCEING.
83. When I came in, they all (sit)WERE SITTING round a fire. Mr. Pike (do) WAS DOING a crossword puzzle, Mrs. Pike (knit)WAS KNITTING, and the others (read)WAS READING.
84. Mr. Jackson (paint) HAS PAINTED his house since last month.
85. She (ask) HAS ASKED me to tell about him several times.
86. The audience (listen) LISTENEDto everything he said last night.
87. At 4 p.m yesterday? Well, I (work)WAS WORKING in my office at that time.
88. A: I (play) PLAYED football when I was 5 years old.
B: HAVE You (play) PLAYED since you (come) CAME to England?
A: Oh, yes. I (play)HAVE BEEN PLAYING quite a lot. I (join) JOINED a club the day after I (arrive)ARRIVED.
89. I'm preparing to support anything he (say) WILL SAY tomorrow.
90. Sometimes I (get) GETS up before the Sun (rise)RISES.
91. He said he (be)WAS mistaken.
9 92. Don't speak until someone (ask) ASKES you.
93. Mary (come) COMES from London.
94. Please be quiet! I (work)AM WORKING.
95. When I (be)WAS a child, I (want)WANTED to be a doctor.
96. David (be)WAS born after his father (die).DIED
97. Long ago, my younger brother often (cry)CRIED .
98. I (not send) WON'T SEND the parcel until I hear from you.
99. The last train (leave) LEAVES the station at 5 p.m.
100. Up to now, the teacher (give)HAS GIVEN our class five tests
I) Put the correct form of the verb
30.He (lose)...has lost..his books. He (look)...has been looking.... for them all afternoon, but they (not turn up)....haven't turned up....
31.She (work) .....has been working...so hard this week that she(not have)....hasn't had... time to go to the cinema
32.Your hair is wat.(You swim)...Have you been swimming....for a long time?
33.You look very tired.(You wok) .....Have you been working....very hard?
34.The telephone (ring)....has been ringing...for 2 minutes, but I (not answer)....haven't answered....it yet
35.Saigon.....is growing.....(grow) now into a big city
36.I....haven't seen...(not see) Nam for a long time.I....saw..(see) him last three years ago.
37. The bell....ring.....(ring) so we must go
38.I....met...(meet) Mary last night. She...has become.....(become) a very big girl
39. He is very thirsty; He...hasn't drunk....(not drink) for twenty-four hours.
40.Nam...has been..(be) in this school for four years (and he is still here)
41. My mother...has been.....(be) in hospital for a long time and she cannot go home yet
42. She ..has read...(read) a lot of books this year
43. Ever since he left university he ...has had..( have) 5 different jobs in different cities
44.When he was ten he...ran..(run) away from home
45.How many cigarettes...are..you.....smoking...(smoke) today?
46.In those days, mum....looked.....(look) after us very carefully
47.Shakespreare....wrote...(write) plays as well as poems.
48. Since my father retired, he...has writed...(write) three books
49.I am not studying today. I..studied...(study) a lot yesterday. I.....(study) a lot this week.
50. Could you imagine I...make....(make) ten phone calls abroad today?
51.How long....have....you...been....(be) here for?
52.I....like....(like) English all my life.
53.I....want...(want) to be a doctor until I was twenty
54.They.....have unemployed......(unemploy) since they left London
55.How long...have...you...been studying...(study) French?
56.I.....haven't read.....(not read) many novels since I went to university.
57.When I was a child, I..liked..(like) street fook
58. I...am having...(have) trouble concentrating for a week now.
59. He .......learned.....(learn) a lot in his job.
60.My friend Lan and I......have known.....(know) each other for ages.
61.I.....was staying...(stay) with my friends while I was in India
62.I..went..(go) to Toronto last year for business.I..have gone..(go) there several times since then.
63.I..lived..(live) in British Columbia from 1998 to 2002
64.My friend,Joe...has lived...(live) in Vancouver since 2000
65.Before Joe...moved....(move) to Vancouver, he..has worked....(work) on cruise ships as a cook.
66. My collage roomate from Ghana.We..have room.(room) together for three years, and then she ..returned.. (return) home.
67.My grandfather....is..(be) a great golfer for most of his life and really enjoys it.
68.Since my husband began working the night shift,he..has slept..(sleep) not very well
69.Minh works in a bookshop.He..has worked..(work) there for three years
70.Last year we..went..(go) to Nha Trang for a holiday.We.have stayed..(stay) there for 3 weeks.
71.Tan and Quang...played..(play) tennis yesterday afternoon
72.My hair is clean.I...wash..(wash) it
73.I...wash...(wash) my hair after breakfast this morning
74....Did.....you...see....(see) Lan last year?
75.When I was child I...didn't like...(not like) picture books
76....Have....you ever....been....(be) to the United States?
77.What time..did..you...go...(go) to bed last night?
78.My aunt is a writer.She...writes..(write) many books
79.Kathy loves travelling.She ..has visited...(visit) many countries
80.We (study)..have studied..a very hard lesson the day before yesterday.
1. We still doing our work now. But we will with you right after we finish it.
2. He got off the train and went straight home. But he soon realized he had left his umbrella on the train.
3. He has been good to me since i was a little girl. I won't forget his kindness.
4.They still live in a small house now. But they will move to a big building as soon as they finish repairing it.
5. What are you doing at this moment?
- I am writing a report.
- When will you finish it?- I think I will finish it in ten minutes.
6. - Since when did you work at this factory?
- I have worked at this factory since i was very young.
7. How long have they been here?
- I don't know exactly.May be,they have been here since 7 o'clock.
8. He came into the study, stared at me and left without saying a word.
9. Nobody knows what he does to earn his living after he finishes school.
10. He is busy at the moment. But he will come to give you a helping hand as soon as the finished his work.
Chúc cậu học tốt!
Sorry for any mistakes
1. We still doing our work now. But we will with you right after we finish it.
2. He got off the train and went straight home. But he soon realized he had left his umbrella on the train.
3. He has been good to me since i was a little girl. I won't forget his kindness.
4.They still live in a small house now. But they will move to a big building as soon as they finish repairing it.
5. What are you doing at this moment?
- I am writing a report.
- When will you finish it?- I think I will finish it in ten minutes.
6. - Since when did you work at this factory?
- I have worked at this factory since i was very young.
7. How long have they been here?
- I don't know exactly.May be,they have been here since 7 o'clock.
8. He came into the study, stared at me and left without saying a word.
9. Nobody knows what he does to earn his living after he finishes school.
10. He is busy at the moment. But he will come to give you a helping hand as soon as the finished his work.
1. We (live)have lived in this house since 1970 that is to say ever since my father (die)died. He (come)came to this country twelve years ago. He (be)was born in South America and (live)lived there until he (get)got married.
2. HaveYou (see)seen Mrs. Chi lately? - yes. I (see)saw her at the school gate three day ago.
3. As soon as I have enough money. I'll buy a new car.
4. I (not use)don't use the car this evening, so you can have it.
5. I (walk)was walking along the street when I suddenly (feel)felt something hit me in the back. I (not know)don't know what it was.
6. My brother is an architect. He loves (design)designing new buildings.
7. They decided (not go)not to go to the cinema.
8. There is no point in (arrive)arriving half an hour early.
9. I found a tree (lie)lying across the road. I wasted hours (look)looking for this book.
10. Pardon me for (be)being late. It is very kind of you (wait)to wait for me.
11. I still remember for (hear)hearing her (sing)to sing this song.
12. I distinctly remember (pay)to pay him. I gave him 2 dollars.
13. If only he (know)knew then that the disease was curable.
14. The teller was made (lie)to lie down on the floor.
15. You risk (lose)losing your money when you put it into that business.
16. It is difficult to get used to (eat)eating with chopsticks I prefer (drive)driving to (be driven)being driven.
17. I'll never forget (meet)to meet her years ago.
18. She was made (pay)to pay back the money.
19. He described the accident as if he (see)saw it himself.
20. Has he learnt the poem, he (tell)would have told her about it.
21. Can you see that I'm busy (write)writing?
22. Hardly I (arrive)had arrived when a quarrel broke out.
23. How doyou (get)get on at school?
24. Hardly he (take)took up the book when the phone ring.
25. Coming into the room he (see)sees Mary where he (leave)left her.
26. It's time we (leave)left for the airport.
27. Is there anything here worth (buy)buying?
28. Provided you leave now, you (catch)will catch the train.
29. As long as you (use)use my car carefully, you can lend you some days.
30. The committee recommends that the annual subscription (be)was increased to $3.
31. God save the Queen.
32. My sister (talk)is talking to his pen pal on the phone at the moment. They (not contact)haven't contacted each other for a long time.
33. Jeans (make)were made about 2 hundred years ago, and now they (sell)are sold in every corner of the world.
34. I wish I (have)will have a good English-Vietnamese dictionary.
35. If there (be)is too much exhaust fume in the air, more and more people (cope)will cope with respiratory problems.
36. I suggest (burn)burning coal to heat the house.
37. I think we should (speak)speak English in the class.
38. These students (learn)have learnt English since they (be)were five.
39. Who (invent)invented telephone?
40. Lan (write)has written to her pen pal for three years, and they (meet)met each other last week.
I. Give the correct form of the verb in brackets
1. We (not see) haven't seen her since we (be) were on holiday in Hạ Long Bay...............
2.Phuong (not finish) hasn't finished her homework yet...........
3.Would you like some coffee? I have just (make) made some..........
4. No one (use) has used this car for several years................
5. Last night when we (visit) visited him, he (do) was doing an experiment on the upstairs................
6. The phone (ring) was ringing at midnight last night.....................
7. I (not see) haven't seen your uncle recently. - No. He (not go) hasn't gone out since he (buy) bought a new color TV..................
8. Ba and Phong (know) have known each other quite well for years...............
9. My uncle has just (open) opened a new internet house on Trang Thi street................
10. Her grandfather (die) died 20 years old. She (never meet) has never met him.....................
11. Linh's brother (lose) lost his job last month and since then he (be) has been out of work...............
12. Have You (see) seen Mrs.Chi lately? - Yes. I (see) saw her at the school gate three days ago..............
13. The Pikes (move) have moved to London since 2002..........................
14. As soon as I (have) have enough money, I 'll buy a new car........................
II. Rewrite the sentences below so that the meanings stay the same
1. Would you like to join us on our trip to Tamdao Mountain?
Why don't we go on a trip to Tamdao Mountain?
2. It takes me two hours each day to do my homework.
I spend two hours each day doing my homework.
3. How high is the Big Ben Clock Tower?
What is the height of the Big Ben Clock Tower?
4. He looks after the sick people.
He takes care of the sick people.
5. She knows how to draw well.
She is good at drawing.
I. Give the correct form of the verb in brackets
1. We (not see)haven't seen her since we (be)have been on holiday in Hạ Long Bay...............
2.Phuong (not finish)hasn't finished her homework yet...........
3.Would you like some coffee? I've just (make)made some..........
4. No one (use)has used this car for several years................
5. Last night when we (visit)visited him, he (do)was doing an experiment on the upstairs................
6. The phone (ring)was ringing at midnight last night.....................
7. I (not see)haven't seen your uncle recently. - No. He (not go)hasn't gone out since he (buy)bought a new color TV..................
8. Ba and Phong (know)have known each other quite well for years...............
9. My uncle has just (open)opênd a new internet house on Trang Thi street................
10. Her grandfather (die)died 20 years old. She (never meet)has never met him.....................
11. Linh's brother (lose)lost his job last month and since then he (be)has been out of work...............
12. HaveYou (see)see Mrs.Chi lately? - Yes. I (see)saw her at the school gate three days ago..............
13. The Pikes (move)have moved tờ London since 2002..........................
14. As soon as I (have)had enough money, I 'll buy a new car........................
II. Rewrite the sentences below so that the meanings stay the same
1. Would you like to join us on our trip to Tamdao Mountain?
Why don't you join us on our trip to Tamdao Mountain?
2. It takes me two hours each day to do my homework.
I spend two hours each day doing my homework.
3. How high is the Big Ben Clock Tower?
What is the height of the Big Ben Clock Tower?
4. He looks after the sick people.
He takes care of the sick people.
5. She knows how to draw well.
She is good at drawing
1) My sister (start) has started new job since last week.
2) Yesterday I (be) was busy so I (not / have) didn't have time to phone you.
3) We (live) have lived in London for ten years.
4) We (not / see) haven't seen each other since last week.
5) Our dad (start) has started a new job since yesterday.
6) They help the community by (participate) participating in the recycling program.
7) He enjoys (get) getting up late on Sunday morning.
8) When I (be) was young, I used to (love) love this book.
9) Last night, I (go) went to bed late. Suddenly I (hear) heard a noise.
10) Martha (phone) phoned me yesterday. She’s on holiday in France.
11) What did you (use) use to do in your free time? I used to go jogging.
12) My father used to (tell) tell us stories when I was young.
13) What did you (do) do last night? I (watch) watched TV.
14) I (read) have read this book for two hours.
15) She likes (read) reading comic books in the library.
16) Lan (be) has been to the USA for 2 years.
17) We (learn) have learned since 1999.
18) They (eat / already) have already eaten Chinese food.
19) Mr. Nam (work) has worked in this factory for 10 years.
20) How long have you (live) lived in Hanoi? I (live) have lived there for 10 years.
1) My sister (start) has started new job since last week.
2) Yesterday I (be) was busy so I (not / have) didn't have time to phone you.
3) We (live) have lived in London for ten years.
4) We (not / see) haven't seen each other since last week.
5) Our dad (start) has started a new job since yesterday.
6) They help the community by (participate) participating in the recycling program.
7) He enjoys (get) getting up late on Sunday morning.
8) When I (be) was young, I used to (love) love this book.
9) Last night, I (go) went to bed late. Suddenly I (hear) heard a noise.
10) Martha (phone) phoned me yesterday. She’s on holiday in France.
11) What did you (use) use to do in your free time? I used to go jogging.
12) My father used to (tell) tell us stories when I was young.
13) What did you (do) do last night? I (watch) watched TV.
14) I (read) have read this book for two hours.
15) She likes (read) reading comic books in the library.
16) Lan (be) has been to the USA for 2 years.
17) We (learn) have learned since 1999.
18) They (eat / already) have already eaten Chinese food.
19) Mr. Nam (work) has worked in this factory for 10 years.
20) How long have you (live) lived in Hanoi? I (live) have lived there for 10 years.
1.Last month I (be) was in the hospital for ten days.
2.Don't call me in the afternoon. I am usually (be) away in the afternoon.
3.John(drive) has driven that car ever since I (know) knew him.
4.People (speak) speak English in most of Canada.
5The dog (wag) wags his tail whenever he (see) sees me.
6.I(never see) have never seen anyone more punctual than your brother.
7.I(meet) met your brother this afternoon at Green Street.
8.He(light) lit a cigarette and (walk) walked to the window.
9.The performance(begin) began at 7 o'clock and (last) last for 3 hours.
10."Have You(be) been here before?" - Yes, I(spend) spent my holidays here last year.
11.He(leave) left for London 2 years ago and I (not see) haven't seen him since.
12. Have You(be) been to the laboratory this week?
13.Thousands of people (see) will have seen this exhibition by the end of the month.
14.By the time u(finish) finish cooking they(do) will have done their homework.
15.I don't think he(change) has changed in the thirty years I(know) have known him.
16. Then about a year ago he(disappear) disappeared and I(never hear) have never heard from him since.
17. My father(fight) fought for 4 years in the last war.
18.I'm taking my daughter out tonight. She(not have) hasn't had fun for a long time.
19.When I(look) looked at my suitcase, I could see that somebody(try) had tried to open it.
20.When we(get) got to the restaurant, we(find) found that nobody (remember) had remembered to reserve a table.