ủa tính nhanh hay tính giá trị biểu thức hay tính thường dợ bên đó

1+2-3-4+5+6-7-8+9+10-11-12+13+98-99-100+101+102 = 103

1. to buy

2. wash

3. staying

4. to finish

5. to finish

6 go

7. play

8. telling/ to tell

9. to be

10. to use

11. visit

12. cooking

13help

14. to see

câu 9 phải là "be "mới đúng

1. expectation

2. swimming

3. writing

4. odorous

5. service

6.attentively

7. troublesome

8. noticeable

9. fixings

10. unforgiveable

11. argument

12. appearance

15. inconvenience

4. odorous là sai rồi nhé. Nước làm gì có mùi. Phải là odourless (không có mùi)

9. fixings không hợp lý. Là fixtures. từ này là cụm luôn. Fixtures and fittings

10. unforgivable

11. Agreement mà tại sao lại chuyển qua argument. Phải là disagreement chứ

12. Nghĩa không phù hợp. disappearance

13. misinformation. nếu để infomation nguyên thì nghĩa không đúng

14. injustice (không công bằng)

1.They want(buy) .....to buy....... some meat.

2.I am used to(stay) ....stay........ up late.

3. It takes him 2 hours (finish).....to finish.......this exercise.

4.The test is too difficult for the pupils (finish) .......to finish...in time.

5. He asked me(go) .....going.......with him

6. They let him(play) ......play.....here.

7.It's no use(tell) ......to tell.... him (tell)......telling........ the truth

8. You had better(be) ....were....... there on time.

9. The man shows us how(get) ....to get......... to the railway station.

10. I used to(visit)....visit... Nha Trang.

11. Mai is busy(cook)....in cooking.....in the kitchen.

12.It's very kind of you(help)...to help.....me.

13.This film is interesting enough for me(see)..to see.....it again.

14.Mai isn't old enough (see) ......to see...... horror films.

1.They want(buy) ......to buy...... some meat.

2.I am used to(stay) ...staying......... up late.

3. It takes him 2 hours (finish).....to finish.......this exercise.

4.The test is too difficult for the pupils (finish) .....to finish.....in time.

5. He asked me(go) ......to go......with him

6. They let him(play) ....play.......here.

7.It's no use(tell) ....to tell...... him (tell)......to tell........ the truth

8. You had better(be) ....be....... there on time.

9. The man shows us how(get) ........to get..... to the railway station.

10. I used to(visit)..visit..... Nha Trang.

11. Mai is busy(cook)...to cook......in the kitchen.

12.It's very kind of you(help)..to help......me.

13.This film is interesting enough for me(see)..to see.....it again.

14.Mai isn't old enough (see) .....to see....... horror films.

1+2+3-4-5-6+...+97+98+99-100-101-102

=(1+2+3-4-5-6)+...+(97+98+99-100-101-102)  có 17 cặp số

=(-9)+(-9)....+(-9) 17 cặp số

=(-9).17=-153

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D = 1+2+3-4-5-6+7+8+9-10-11-12+........+97+98+99-100-101-102

D = (1+2+3-4-5-6) + (7+8+9-10-11-12) + ........... + (97+98+99-100-101-102)

D = (-9) + (-9) + .......... + (-9) có 17 số -6

D = -6.(-9)

D = 54