---The woman biologist stayed in Africa studying wild animals for 13 years before she returned.

---Oh, dear! She ________ a lot of difficulties.

A. may go through                                  B. might go through      

C. must have gone through                      D. ought to have gone through

It rained for two weeks, completely _______ our holiday.

A. ruined               B. ruin                          C. to ruin               D. ruining

_______ is obviously right is to give all children equal opportunities to develop their special gift.

   A. Which                B. What                        C. That                 D. It

We’d better set off right now, or it will be dark        we know it.

A. before         B. after                  C. when           D. until

It was in the garden of his old house _______ he grew up that he dug up a pot of gold.

  A. that                    B. where                   C. which               D. what

To ______ good relationships with your teachers and classmates, you should learn to be on good terms with them.

A. bring up         B. add up            C. keep up           D. take up

---I think the company may not offer you a good pay.

--- ______, I won’t take the job.

   A. That is to say       B. What is more   C. In other words   D. In that case

---Hello, may I have an appointment with the doctor?

---_________

A. Sorry, he is busy at the moment.                 B. Why didn’t you call earlier?

C. Certainly. May I know your name?              D. Sorry, he doesn’t want to see you.

--- Is it convenient to you if I call you up at 9 o’clock tomorrow morning?

--- I’m afraid not. I _______ a meeting then.

  A. will have attended                                     B. was attending    

  C. will be attending                                       D. am attending

--- Did you listen to Mr. James’ lecture?

--- Yes, I have never heard a ________ one.

  A. more exciting               B. more excited      C. most exciting     D. most excited