20. 　　　　　many times, but he still didn’t understand it.

A. Having been told 　　　　　　 　B. Though he was told

C. To have been told 　　　　　　 　D. He was told

19. -What does this modern-day dinosaur look like?

-The tongue of this animal can be extended _____ of its body.

A. more than twice the length　　　　　　　 　 B. twice more than the length　　

C. more than the length twice　　　 　　 　D. more twice than the length

18. The World Wide Web is sometimes jokingly called the World Wide Wait because it_______ be very slow.　　　

　 　A. should　　　　 B. must　　　　 　C. can　　　　 　D. will　

17. -How about your conference?

-Pretty successful．It allowed both sides of us to better understand ____ each stood on many issues．

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

16. 一When shall we restart our business?

　　 一Not until we　　　 our plan.

　 　 A. will finish　　 B. are finishing　　　 C. are to finish　　　 D. have finished

15. -We’d like you to start work tomorrow if possible. ___________________

　 　- I’m sorry, but I can’t possibly start until Monday.　　　　

　 A. Do you agree with me?　　　　　　 　B. Is that a good idea?

C. Do you think I’m right?　　　　　　 D. Will that be all right?

14. 　　　　　blood if you can and many lives will be saved.

A. Giving　　　　 　　 B. Give　　　　　 　　　 C. Given　　　　　 　 D. To give

13. Our bedrooms are all on the sixth floor, 　　　　with its own bathroom.

A. all　　　　　　 　　　 B. every　　　　　　 　 C. either　　　　　 　　 D. each

12. Everyone had a form in his hand, but no one knew which office____．

A. to send it to　　 B. to sent it　　 C. to be sent to　　 　　　 D. to have it sent

11. Actually, 　　　works hard can be　　　 they want to be, whether it is a pilot, an engineer or a manager.

A. anyone; whoever　　　　　　　　　　 　　　 B. no matter who; whoever

C. whoever; no matter what　　　　　　　 　　　 D. whoever; whatever