20. Without electricity, people made some candles ____ light.

　　　 A. giving　　　　　　　 B. give　　　　　　　　　　　　 C. to give　　　　　　　　　　　　　　 D. given

19. After quarrelling with each other, the two boys stood there with their sister ____ at them.

　　　 A. glaring　　　　　　　 B. staring　　　　　　　　　　 　　　 C. looked　　　　　　　　　　　　　　 D. glanced

18. He observed her ___ across the street. A. come 　　 B. comes C. to come　　　 D. not to come

17. After several minutes’ reading, the students went on ____ their exercises.

　　　 A. doing　　　　　　　　 B. with doing　　　　　　　　 C. to do　　　　　　　　　　　　 D. for doing

16. It is no good ____ them not to waste time___ all day.

　　　 A. to ask … to play　　　 B. asking…to play　　　　 C. to ask.. playing　　　　 D. asking…playing

15. He found ____ difficult ____ this exercise and that.

　　　 A. them…to do　　　 B. it …to do　 　　　　　　　 C. this…to do　　　　　　　 D. those… doing

14. We often hear the song ____ . But we never hear you ____ the song.

　　　 A. sing…sing　　　　 B. sung…to sing　　　　　 C. singing…singing　　　 D. sung…sing

13. I tried to persuade him ____ , but he would not listen me.

　　　 A. stay at home　　　 B. to stay at his home　　 C. to stay indoors　　　　　 D. staying inside

12.We have got the bike ____. A. repairing　　　　 B. repaired　　　　　　 C. repair　　　　 D. to repair

11. They got him ____ early. A. start　　 B. started　　　　 C. to be starting　　　　　　 D. to start