19. The 　　　　　price will save you one dollar for each dozen.

　 A. reduce　　 　 B. reducing　　 　　 C. reduced　　 　　　 D. reduces

18. The student corrected his paper carefully, 　　　　the professor's suggestions.　

　 A. follow　 　　　 B. following　 　　 C. followed　 　　 D. being followed

17. He went from door to door, 　　　　　waste papers and magazines.　

　 A. gathering　　　　 B. gathered　 　　 C. gather　　 D. being gathered

16. 　　　　 　the office, the foreign visitors were shown round the teaching building. 　

　 A. Having shown　 　　 B. Showing　 　 C. Has shown　 　　 D. Having been shown

15. With winter 　　　　　on, it's time to buy warm clothes.　

　 A. came　　 　　 B. comes　　 　 C. come　　 　 D. coming

14. Deeply 　　　　, I thanked her again and again.　

　 A. being moving　 B. moved　　 C. moving　　 　　　 D. to be moved

13. 　　　　 　how to do the homework, I went to ask my teacher for help.

　 A. Not to know　 　　 B. Not knowing 　　　 C. Knowing not　 　 D. Not known

12. I've never heard the word 　　　　in spoken English.　

　 A. use　　 　　　 B. used　　 　　 C. using　　 　 D. using

11. The result of the test was rather 　　　.　

　 A. disappointed　 　　　 B. disappointing　 　 C. being disappointed 　 　 D. disappoint

10. There was so much noise in the room that the speaker couldn't make himself 　.　　

A. being heard　 　　　 B. hearing　 　　　 C. heard　　 　 D. hear