2. I was surprised to look at him.

　 I looked at him _in surprise__.

1. What’s wrong with your mother?

　 What’s _the matter__ with your mother?

　 What _happens to __ your mother?

　 What _takes place to __ your mother?

　 What’s __the problem__ with your mother?

18. Please __don’t run__ (not run) in the street.

17. We should tell them __not to wear__ (not wear) the casual clothes.

16. My best friend is _more__ (friendly) than you.

15. Please __read__ (read) more in the morning, will you?

14. Could you please _not cross__ (not cross) the street?

13. Now parents seem __to push__ (push) their children more pressure.

12. The students always complain about __doing_ (do) too much homework.

11. I found it difficult __to listen_ (listen) to the teacher in class.