With the moonlight keeping them ________, the tourists climbed over the mountain without a guide.

A. approach   B. silence      C. secret     D. company

 _____ on May Day, the Shanghai Expo has attracted tens of thousands of visitors around the

world every day.

A. Having opened    B. Opened    C. Opening    D. To open

 ---The exam starts at 9:00 tomorrow morning.

---___________ I fail to arrive there on time?

A. What if      B. As if  C. Only if      D. Even if

 My toothache is killing me. I _____ it _____ away. But now it’s getting worse and worse.

   A. think; is going          B. thought; was going   

C. have thought; is going    D. had thought; had gone

 I’m not sure whether I will have anything else to do this evening. _____, I will try every

possible means to come to your birthday party.

   A. Even though    B. If so   C. Anyhow    D. Instead

 Leaders of many countries have been trying to _____ what it is that makes China develop so

fast in recent years.

A. carry out    B. figure out    C. watch out    D. make out

 Interestingly in some parts of the world, women are expected to earn money _____ men work at home and raise their children.

A. but    B. though   C. because    D. while

 —______ I lock the lab before I go home?

—Don’t bother. I’ll check it myself later.

A. May   B. Must     C. Can      D. Shall

 —Did you tell Jimmy that we’ve put off the meeting?

—No. He rushed out _____ I could say anything.

A. in case    B. after    C. before    D. unless

 The day before yesterday John was dismissed because of his _____ attitude towards his job.

   A. informal    B. casual    C. determined    D. earnest