1. had to

2. have to 

3. must be

4. musn't

5. have

6. have to

7. must

8. have to

9. must

10. musn't

1. Do you speak Greek?

2. Does Bill know Mr Jameson?

3. We don't live in a large house

4. Alexander doesn't go to the beach very often

5. Do I  have to atttend the ceremony?
6. Is Jane watching television at the moment?
7. Costas isn't work in a bank

8. The children are not listening to their mom now

9. Do they live in New York?

10. Is William studying at present?

11. Where do you usually spend your holiday?

12. I do not earn much money today

II.

1. A

2. A

3. C

4. B

5. C

6. D

7. A?

8. B

9. B

10. A

1. No it isn't

2. She goes to the post office twice a week

3. Because she and her friends have a PO Box there, they go to collect their mail from friends or relatives

4. You can buy stamps, envelopes, send letters or make phone call

2. go-> went

3. are-> were

4. did-> was

5. in-> at

6. photo-> photos

ukm 

-There is a big tree behind my house

-The theatre is between the stadium and the post office

-Nam's house is opposite of the supermarket

1. every

2. often

3. go

4. late

5. books

dạ. =))