15. A cough is usually nothing to worry about unless it lasts for ten days ________.

　 A. or more　　 　　　 B. instead　　 　　 C. at most　 　　　　 D. only

14. We had an anxious couple of weeks ________ for the results of the experiment.

　 A. wait　 　　　　　　 B. to be waiting 　 C. waited　 　　　　　 D. waiting

13.－Can you show me Mr. Jaffer’s office, please?

　 －__________.But I don’t know if he is in at the moment.

　 A. Thanks　 　　　　　　 B. Go on 　　　　　　 C. Sure　 　　　　　　　 D. You are welcome

12. In some places women are expected to earn money ________ men work at home and raise their children.

　 A. but　　　　 　　　 B. while　 　　　　　 C. because 　　　　　 D. though

11. The manager believes prices will not rise by more than __________ four percent.

　 A. any other 　　　　　　 B. the other　　 C. another 　　　　　　 D. other

10. Although this ________ sound like a simple task, great care is needed.

　 A. must 　　　　　　　　　 B. may　　 　　　　 C. shall　　 　　　　　 D. should

9. I used to quarrel a lot with my parents, but now we _________ fine.

　 A. look out　 　　　　　　 B. stay up 　　　　　 C. carry on 　　　　　 D. get along

8. In the United States, there is always _________ flow of people to are 　of _________ country where more jobs can be found.

　 A. a; the 　　　　　　　　　　 B. the; a　 　　　　 C. the; the　 　　　　 D. a; a