6. 　　　　　　the doctor 　　　　　　　(operate) on the sick man at this time yesterday?

5. The girl is practicing 　　　　　　　　(read) English now.

4. I went to school as 　　　　　　　　　(usually).

3. What _____________ (happen) to him last night?

2. Every morning she spends 40 minutes 　　　　　　　　(cook) for the families.

1. I’ m interested in ______________ (play) volleyball.

10. The boy can d　　　　　 　　　himself properly.

9. Yesterday Father went away on b　　　　　　　　 　in Beijing.

8. Dr. Bethune performed o　　　　　　　　 　for 69 hours without stopping to rest.

7. You can i　　　　　　　 　reading English if you don’t read it early.