31. Are you free? How about ________ chess?

A. to play                  B. play           C. playing              D. to playing

32. We think that everyone should ________ some housework.

A. does                        B. do             C. to do                 D. did

33. Our English teacher has given us some good ________ English learning. It’s very useful.

A. advice to                  B. advices to   C. advice on          D. advices on