Ex.3.Change these sentences into passive:
1. They are building that house now.
2. She bought a lot of flowers for her mother.
3. The children were eating all the vegetables and meat at 7p.m.
4. Lien didn’t finish her homework.
5. People use this cloth bag again and again.
6. You don’t prepare your lesson before you go to school.
7. He has written these books for the children for ten months.
8. Ha Long Bay attracts a lot of tourists.
9. Thu has seen that movie twice.
10. Vinh rented a car last week.
1 , That house is being built now
2 , A lot of flowers were bought for her mother
3 , All the vegetables and meat was being eaten by the children at 7 p.m
4 , Lien's homework wasn't finished by her
5 , This cloth bag is used again and again
6 , Your lesson isn't prepared before you go to school
7 , These books have been written for the children for ten months
8 , A lot of tourists are attracted by Ha Long Bay
9 , That movie has been seen twice by Thu
10 , A car was rented by Vinh last week