二、单项选择 (每小题1分，共15分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
31. — What can Lily do? — She can play _______ drums.
A. a B. an C. the D. /
32. — What do you like to do _______ class?
— I like to play volleyball.
A. after B. past C. from D. to
33. — Who is Mr. Smith? — He is _______ English teacher.
A. us B. him C. our D. she
