1. The boys are helped by Mai.
2. Her housework is done by Lan.
3. Flowers are cut in the garden every morning.
4. The exercises are done well.
5. The garages are cleaned every morning.
6. The bread is wrapped automatically by the machine.
7. Every car engine is checked thouroughly.
8. This computer is exported to seventy different countries.
9. These books were bought from that store by Mary.
10. That house were destroyed by fire.
11. The concert was enjoyed very much by the audience.
12. The accident was seen by Mr. Smith.
13. The report was left on the desk.
14. This film will be seen soon.
15. It can be seen now.
cho mình xin ctlhn nhé
