35. ---My family usually goes skating for vacation. I like skating, but I want to try something different this year.

　 ----_______.

　 A. Let’s go!　　 B. Cheer up!　　 C. Like what?　　 D. Take care!

34. Not easy as the problem of pollution is____, no one should just stop trying.

　 A. to solve　　 B. to be solve　　 C. solving　　 D. being solved

33. Let us suppose that we _____him about it, what would have happened?

　 A. had not told　　 B. did not tell　　 C. will not tell　　 D. don’t tell