19. After he was promoted to the present position, he is not so hardworking as he ______.

　 A. was used to　　　 B. used to be　　　 C. was used to being　　　 D. used to

18. What actually ______ the accident has not yet been determined.

　 A. brought out　　 B. brought on　　 C. brought about　　 D. brought up　　　

17. Many of us would agree that improving country through technology has great potentials ______ food development in China.

　 A. in terms of　　　 B. regardless of　　　 C. in spite of　　　 D. on account of

16. This book is specially intended ______ those who want to improve their writing.

　 A. by　　　　 B. at　　　　 C. with　　　　 D. for

15. At school, it is essential that every child ______ equally regardless of family background.

　 A. treating　　　 B. treated　　　 C. be treated　　　 D. is treated

14. I’d appreciate it ______ you could call back this afternoon and tell us your final decision.

　 A. if　　　　 B. when　　　　 C. whether　　　　 D. that　

13. In consequence of the proper ______ taken by the central government, the economy of China is picking up fast after the global crisis.

　 A. actions　　　 B. solutions　　　 C. representation　　　 D. measures　

12. I ______ tell you with certainty that he won’t be able to finish it before the deadline.

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

11. Stay away from the furnace, ______ your overcoat may catch fire.

　 A. so　　　　 B. and　　　　 C. since　　　　 D. or　

10. He was not listening and made a(an) ______ answer to the teacher’s question.

　 A. ordinary　　　　 B. random　　　 C. reasonable　　　 D. original