18. In this speech contest, the first and second prizes went to Jane and Mary __________. A. respectively B. respectfully C. respectably D. infectively ...

6. She was amazed at the diverse cultures of the country. She decided to ________ her visit here for one week. A. expand B. extend C. delay D. postpone ...

1. ________ tomorrow's lessons, Frank has no time to go out with his friends. A. Not preparing B. Not having prepared C. Not to prepare D. Being not prepared ...

6. They went to the village in the hope that they could find some vegetables. A. 错误 B. 正确 ...

1. I am a stranger to ancient coins. A. 错误 B. 正确 ...

16. I fell and hurt myself while I _______ football yesterday. A. was playing B. am playing C. play D. played ...

11. Scientists say it may be five or ten years _______ it is possible to test this medicine on human patients. A. since B. before C. after D. when ...

5. It's _______ to interrupt the others while they are talking. A. rough B. rude C. polite D. troublesome ...

10. Having spent his childhood in France, John is able to converse in French rather good. A. 错误 B. 正确 ...

5. Since their beginning, human survival has depended on their interaction with the environment. A. 错误 B. 正确 ...