Câu trả lời:
1. The piano upstairs can be carried
3. This shirt can't be wore because it is very small
2. Old men should be treated by children with respect
4. Dogs must be kept outside shop
5. The wine should be opened about 3 hours before you use it
6. Nails must not be hammered into the wall without permission
7. Bicycles must not be left in the hall
8. This machine must not be used after 5p.m
9. The wall must be cleaned before you paint it
14. Cigarettes can't be bought at a bakery
15. The engire running shouldn't be left
10. Should Jane be helped with the sewing by them
11. Must the test be finished before ten?
12.. The letter might have been sent to the wrong address
13. Your money are going to be stole if you are not careful