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1. A lot of homework is done by us every night.
2. A funny story is being told by my father.
3. A vase of flowers was broken by the boy yesterday.
4. My clothes were being washed when you called.
5. Math has been taught at this school for a long time.
6. All kinds of cars can be repaired.
7. This book must be finished on time.
8. Was this book bought at Nhan Van bookstore by you?
9. What time is Mr.George's lecture given?
10. Coffee is being drunk in the living room by Mary now.
11. My handbag was left on the bus this morning.
12. Cars mustn't be parked here.

13. A lot of food is being cooked for the party by my mother.
14. Was she given a lot of special presents by her friends?
15. English hasn't been learned for a long time.