4. My teacher was made（ ）his teaching because of poor health. A. giving up B. to give up C. given up D. give up ...

21. The telephone was invented in 1876 by a man（ ）Alexander Graham Bell. A. named B. naming C. that names D. who named ...

5. It （ ）John and Kate who helped me the other day. A. is B. was C. are D. were ...

22.??Mother keeps crying all the night; she did not have a good time , （ ） she ? A. hadn’t B. had C. did D. weren’t ...

17.??We find（ ） more desirable （ ）the controlling instrument should be put close to the machine . A. it…that B. it…what C. it…how D. it…which ...

12.??（ ）I haven’t read the book, I know very little about it. A. After B. Although C. As D. Before ...

7.??His book was much better than similar books （ ）before him. A. being written B. having written C. written D. writing ...

2.??Were（ ）not for the invention of television , we would not be able to see things going on many miles away . A. it B. that C. this D. those ...

11. Sorry, I can’t solve your problems, I know （ ）English. A. few B. a few C. little D. a little ...

24.??He keeps on learning martial arts for about （ ）. A. one and half years B. a half and year C. a year and half D. half a year ...