Bài 1

Chọn các từ đúng để hoàn thành câu. Đôi khi cả hai lựa chọn đều có thể.

1. In my office you  have to / don't have to wear a suit but lots of people do.

2. These pills - Chọn -A. must not B. don't have to be taken if you are under twelve years old. 

3. I - Chọn -A. must B. have to leave now because I have a meeting.

4. I - Chọn -A. didn't need to go B. needn't have gone to the station to pick her up because she decided to get the bus, so I finished my essay instead.

5. Notice to all conference participants: Please note that you - Chọn -A. must B. have got to register before entering the conference hall.

6. You - Chọn -A. mustn't B. don't have to smoke inside but you can smoke outside.

7. When I was at university I - Chọn -A. must B. had to write my assignments by hand because there weren't any computers then.

8. British dog-owners - Chọn -A. have toB. must have passports for their dogs when they travel abroad.

9. Next year I - Chọn -A. will have to B. will must get a job to pay back all the money I've borrowed from the bank for my university fees.

10. The interview went really well so I - Chọn -A.  didn't need to worryB. needn't have worried about it so much beforehand.