20. He ______ me fifty dollars for it, but at first he promised the work 　 would be done ______.

　 A. charged; free of charge　　　　　　 B. in charged; for nothing

　 C. charged; out of the charge　　　　 D. in charge of; free of charge

19. Have you checked all the machines ______ to Shanghai next week?

　 A. to be sent　　 B. sent　　　　　　　 C. sending　　　　　 D. being sent

18. He is pleased with ______ you have given him and ______ you have 　　　 told him.

　 A. that; that　　 B. what; all that　　 C. which; all what　 D. that; all

17. Good heavens! There you are! We ______ anxious about you, and we 　　 ______ you back throughout the night.

　 A. are; expect　　　　　　　　　　　　 B. were; had expected

　 C. have been; were expecting　　　　　 D. are; expecting

16. Taking this kind of medicine, if ______ , will possibly do him great 　　　 harm. 　　 A. to continue　 B. continues　　　　 C. continued　　　　 D. continuing

15. The old man said the accident ______ careless driving.

　 A. was due to　　 B. dued to　　　　　 C. is due to　　　　 D. due to

14. –Why didn’t they keep in touch with each other in those years?

　　 --Because communication between them was ______.

　 A. destroyed　　　 B. interrupted　　　 C. kept　　　　　　　 D. dropped

13. After listening to his long lecture, we were all ______ out.

　 A. tire　　　　　 B. tired　　　　　　 C. tiring　　　　　　 D. to tire

12. If you happen to go by ______, ______ some aspirins.

　 A. a chemistry; please buy　　　　　　 B. a chemist’s; do buy

　 A. chemist; do you buy　　　　　　　　 D. a chemist; will you buy

11. I have a bit cold. It’s nothing serious, _____.

　 A. altogether　　 B. though　　　　　　 C. slightly　　　　　 D. hopefully