—The air in Nanjing was much better during the Spring Festival because people were not allowed to let off firecrackers.
—I agree. Everyone should do what he can the environment.
| A．protect | B．protecting |
| C．protects | D．to protect |
.-Whose bike is this? -It’s not mine. It’s____________.
| A．someone else’s | B．someone else |
| C．else someone’s | D．else someone |
.-Look at that girl! Is it Susan?
-No,it__________be her.She has gone to her hometown.
| A．mustn’t | B．can’t |
| C．needn’t | D．wouldn’t |
.-Have you found the information about the famous people_________ you can use for the report?
-Not yet. I’ll search on the Internet.
| A．who | B．what | C．whom | D．which |
-Have you read this book？
-Yes．I _______ it two weeks ago．
| A．am reading | B．have read |
| C．will read | D．read |
-Are you going to Tibet for vacation??
-Yes.I want you to ________me with some information about it.
| A．offer | B．give | C．show | D．provide |