20. To make a better group, each member needs to know his own ______ and weaknesses.

A. strengths　　　　　　　　　　 B. values　　　　　　　　　　 C. benefits　　　　　　　　　 D. techniques

19. It was not until the very last moment that ______ to give up the match.

A. he decided　　　　 　　　　　　　　　　　　　　　　　 B. did he decide　　　　　

C. had he decided　　　 　　　　　　　　　　　　　　　　 D. he has decided

18. ---I am glad that all my efforts and bravery pay off finally.

---Congratulations! You know, “ _________.”

A. All roads lead to Rome 　　 　　　　　　　　　　　　 B. Every coin has two sides　 　　　　

C. There is no smoke without fire　 　 　　　　 D. No pains, no gains

17. We just couldn’t get through to you. Perhaps we ________ your number incorrectly.

A. looked up　 　　　 　　　 B. took down　　　 　　　 C. worked out　　　 　 　 D. brought about

16. The Rio Olympics, _____ will be held from August 5 to 21 of 2016, will be the first to be held in South America.

　A. that　　　　　　　　　　　　　　 B. as　　　　　　　　　　　　　 C. who　　　　　　　　 　　　 D. which

15. Parents now believe that there are obvious differences in their approach to educating children compared with _____ of their parents.

　 A. those　　　 　　　　　 B. that　 　　 　　　　　　 C. one　　　　　　　　　　　　 D. ones

14. Some young people in America are expected to leave ______ could be life’s most important decision---marriage--- entirely up to luck.

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

13. He said he didn’t regret telling the truth but felt that he ______ it differently.

A. could have expressed　　　　　　　　　　　　　　 B. could express　　　　　　　　

C. must have expressed　　　　　　　　 　　 　　　　　　 D. would express