17. These countries would join one another against terrorism, _____ was agreed to at the international conference.

　 A. as　　 B. that　　 C. it　 D. what

16. I love the challenge of doing things people say _______.

　 A. must do　　 B. should do　 C. needn’t be done　 D. can’t be done

15._____, both sides politely exchanged the telephone numbers and cards rather than quarrelling with each other.

A. Fortunately　　 B. Immediately　 　C. Probably　 D. Unexpectedly

14.The science of medicine, ____ progress has been very rapid lately, is perhaps the most important of all the sciences.

A. to which　 B. in which　 C. for which　 D. with which

13.–Don’t you think hard work is what makes people succeed ?

　 -________.

　 A. I hope so　　 B. I’ve got it　 C. Wish you success　 D. I couldn’t agree more

12.-I can’t remember any interaction with Grandma, or even if ____ was what we called her.

A. that　　 B. one　 C. it　 D. which

11. -Need we pay more?

　 -No. Packing and postage _____ in price.

A. include　 B. will include　 C. are included　 D. are including

10.Early on February 17, they ____ for the summit from their last camp at 5900 meters.

A. struck out　　 B. stamped out　 C. started out　 D. worked out

9.No hope of arriving on time by bus, ___I try to wave down a taxi.

A. and　 B. so　 C. yet　 D. then

8. Family are people who live together -- _____ for a week at a time.

A. only that　 B. even if　 C. if only　　 D. only if