14 Lan asked Thu where she could find the new cartoons

15 Phong asked Lan if their teacher asked them to clean up the room

16 She asked me to give her some money

17 Tam asked Thu if she would be there for five days

18 The students asked their teacher to give them easier homework

19 She asked her husban if they needed some help

20 Lan asked Hoa is she might have a look at her picture

21 Lam asked Lan if their class would take part in that competition

42 rains

43 gives

44 returns

45 will go

46 study

47 would try

48 has just published

49 has traveled

50 wouldn't lose/didn't lose/hadn't lost

51 didn't rain

52 hot

53 Have you ever been - have been

54 could

55 wants - study

56 listening

57 rings

58 took part

59 was spoken

60 do - to learn

I

0 C

1 D

2 C

3 A

II

0 C

1 C

2 D

III

0 C

1 D

2 B

3 B

4 D

5 C

6 B

7 A

8 C 

16 If you don't go right now, you will be late for the train

17 If she weren't often absent from class, she could keep peace with her classmates

18 If I had known Alice'saddress, I could have written to her

19 If it hadn't rained, everybody would have gone outdoors

20 If I hadn't been busy, I would have watched TV

21 If people see the UFO, they will call the National UFO Reporting Center

22 If Thu could swim, she would go swimming in Lam Son Swimming pool

23 If his flight hadn't been delayed, he could have been there on time

24 If it hadn't been for Lisa's report, I wouldn't have been able to finish the project

25 If it hadn't been for your help, I could have overcome the problem

26 If she had seen the signal, she would have stopped her car

27 If you didn't spoke too fast, they could understand

28 If he had enough qualifications, he would apply for the job

29 If she polished his shoe, she would look smart

30 If you don't go right now, you will be late for the train

12. The joke was too funny for Tom to repeat

The joke was so funny that Tom couldn't repeat 

It was such such a funny joke that Tom couldn't repeat 

13. Emma is not tall enough to reach the top shelf

The top shelf is too high for Emma to reach

The top shelf is so high that Emma can't reach 

It is such a high top shelf that Emma can't reach 

14. The poem is not easy for us to understand

The poem is too difficult for us to understand

The poem is so difficult that we can't understand 

It is such a difficult poem that we can't understand 

15. The music was loud enough to hear

The music was so loud that not everyone couldn't hear 

It was such loud music  that not everyone couldn't hear 

16. The tea isn't warm enough for John to drink

The tea is too cold for John to drink

The tea is so cold that John can't drink 

It is such cold tea  that John can't drink 

17. Mary isn't young enough to join our pen-friend clubs

Mary is too old to join our pen-friend clubs

Mary is so old that she can't join our pen-friend clubs

18. It is not early enough for us to go to school now

It is too late for us to go to school now

It is so late that we can't go to school now

19. The weather was not warm enough for us to go camping

The weather was too cold for us to go camping

It was so cold that we didn't go camping

It was such cold weather that we didn't go camping

20. The car is not cheap enough for him to buy

The car is too expensive for him to buy

The car is so expensive that he doesn't have enough money to buy

It is such an expensive car that he doesn't have enough money to buy

21. My mother isn't strong enough to work hard on the farm everyday

My mother is too weak to work hard on the farm everyday

My mother is so weak that she can't work hard on the farm everyday

25 If it didn't started raining, we would go on cleaning up the beach

27 What does Lan go to the bookshop for?

9A 10C 

IV/ 1. is trying

2. was stolen

3. paying

4. has worked

5. Do you really think

I/ 

1. No, they don't

2. They are considered to be good friends

3. It requires remembering plot lines, themes and characters

4. They are books

5. People become better informed and more of an expert on the topics they read about

1C 2D 3B 4A 5A 

1. If I weren't short, I could play volleyball

2. .....if Miss White lived there

3. .....was so lovely that we decided to spend the day on the beach

4. Although he works hard, he can't support his large family

5. .....he wrote to me was in April

PTHH: 2Al + 6HCl → 2AlCl₃ + 3H₂

PTHH: Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O

PTHH: Fe₂O₃ + 6HCl → 2FeCl₃ + 3H₂O

PTHH: K₂O + 2HCl → 2KCl + H₂O

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