AIDS is said _______ the biggest health challenge to both men and women in that area over the past few years.

A. that it is                                                              B. to be

C. that is has been                                            D. to have been

 Alice hasn’t turned up so far. _______ if she is absent today?We don’t even have the key yet.

A. How                        B. Why                 C. What                D. When

_______left the door unlocked must be held responsibility for the accident.

A．Whomever　　　　　　　　　　　　　　　　　　　　　　　　 B．Whoever　

C．Whatever　　　　　　　　　　　　　　　　　　　　　　　　　 D．Whenever

 She _______ to have lunch with her friend, saying that she wasn’t feeling well.

A. declined                   B. resigned            C. tended               D. approved

 I’d _______ his reputation, and then make a decision about whether or not to approve a loan.

A. take into account                                          B. account for

C. make up for                                                        D. make out

 If you _______ it, your performance will gradually get better.

A. insist on                   B. stick out            C. stick with          D. used to

 I know I have a long way to go, but I’ll do my best to _______ the high standard of the school. I won’t lose your face, I promise.

A. get to                       B. look to                     C. live up to                  D. listen to

 —I won the first place in the exam, mum.

— _______ to you!

A. Congratulations                                     B. Good luck

C. Best wishes                                                        D. Well-done

—Do you feel like climbing the Meiling Mountain this weekend?

— _______ . I was thinking about how to relax myself.

A. I believe not　　　　　　　　　　　　　　　　　　　　　　　　 B. Not really

C. I can’t agree more　　　　　　　　　　　　　　　　　　　 D. What a pity

 The clerk _______ a thief once had to leave the cooperation.

A. who is suspected of being

B. suspected of being

C. who was suspected to be

D. suspecting to