1. What has Charles done?

=> Câu hỏi thì HTHT: Wh.. + had + S + V3

2. How long have you lived here?

=> Hỏi về khoảng tgian

3. Who has watered the tomatoes?

=> Hỏi về người

4. What has gone down?

=> Wh.. + have/has + V3

5. By whom have you been beaten?

- By + mệnh đề quan hệ + have/has + S + V3

I.               Turn the following sentences into passive voice.