20. ---Did you enjoy yourself last night?

　 ---Yes, it’s very nice of you. I appreciated_________ to the party.

　 A. to be invited　　 　　 B. to have invited　 　　　 C. having been invited　 D. being invited

19. ---Hello, Anne, it’s Jack here. Can I speak to Robert, please?

　 ---Hi, Jack. Robert ________ in the garage. Can I get him to call you back?

　 ---Sure. Thanks.

　 A. has worked　　　　 B. is working　　　　 C.　 worked 　 D. will work

18. Hundreds of houses fell down in the earthquake. It seemed, ________,that everything happened.

　 A. all of a sudden　　　　 B. in a hurry　　　　 C. to our surprise　　　　　　　 D. in awhile

17. ---John will be removed from his position if he doesn’t come to work on time.

　 ---Surely, but John isn’t so foolish ________ not to realize that.

　 A. or　 　　　　　　　　　　 B. and 　　　　　　　 C. as　　　　　　　　　　 D. but

16. Albert Einstein once said, “People owe my success ________ my talents. Actually my success lies _________ my diligence.”

　 A. to; on　　 　　　　 B. to; in　　 　　　　　　　 C. with; in　　　 D. for; on

15. ---Excuse me, I want to have my hair cut, but I can’t find a barber-shop.

　 ---There’s ________ at the corner of the street. Just go straight.

　 A. it　　　　　 B. some　　　　 C. the one　 　 D. one