14. Dale said ,"I want my parents to be proud of me .I want them to know that what they did for me was not _____." A. in vain B. for vain C. no use D. worthy ...

8. ____ John won the first prize at the speech contest made the whole class very excited . A. How B. What C. That D. Whether ...

24. I regret ___ that this time I cannot promise you anything . A. to say B. saying C. have to say D. must say ...

12. She is a teacher ____ of our great respect . A. aware B. confident C. capable D. worthy ...

4. The purpose of this organization is to protect customers from unethical business practices and to promote the maintenance of high business and professional standards . A. 错误 B. 正确 ...

24. My sister will be here tomorrow ,but at first I thought that she ____ today . A. was coming B. is coming C. must come D. may come ...

7. The Speaker had no ____ in himself when facing a large audiences . A. experience B. progress C. objection D. confidence ...

8. The more acid you add to the solution ,____ it becomes . A. cloudier B. the cloudiest C. more cloudy D. the cloudier ...

2. Margaret Mead ,who sought ___the young ang old to each other in a recent lecture ,was sympathetic to the young . A. explaining B. to explain C. explanations D. explained ...

1. This instrument is used to measure the density of the fog . A. 错误 B. 正确 ...