Chuyển từ chủ động sang bị động
1. They will not ask him
2. The students are going to plant trees here
3. How can they open this safe?
4. You should place matches out of reach of children
5. They can gain nothing without effect
6. They said that I am a teacher
7. People said that Nam killed his wife
8. Does he often help you?
9. What is she doing?
10. People thought that she is a robber
11. My father often buys me parents on my birthday