1. The wine should be opened about three hours before you use it.

2. Nails must not be harmmered into the walls without permission.

3. Bicycles must not be left in the hall.

4. Books can be kept for three weeks by members.

5. Their complaints should be sent to the main office.

6. All the switches must be turned off before leaving the room.

7. An appointment must be made in advance.

8. The car might be stolen.

9. The room must be kept tidy.

10. The problem can't be solved.

11. This picture can't be restored.

12. He can never be found at home.

13. The pupils's table must be taken into the room.

14. My new car can't be repaired by him in the garage.

15. Their homework must be finished before they go to bed.

Trả lời:

1, The wine should be opened about three hours before you use it.

2, Nails must not be harmmered into the walls without permission.

3, Bicycles must not be left in the hall.

4, Books can be kept for three weeks by members.

5, Their complaints should be sent to the main office.

6, All the switches must be turned off before leaving the room.

7, An appointment must be made in advance.

8, The car might be stolen.

9, The room must be kept tidy.

10, The problem can't be solved.

11, This picture can't be restored.

12, He can never be found at home.

13, The pupils's table must be taken into the room.

14, My new car can't be repaired in the garage by him.

15, Their homework must be finished before they go to bed.

   ~HỌC TỐT~