20. -“You can’t catch me!” Janet shouted, 　　　　away.

　 　A. run　　 B. running　　 C. to run　　　 D. ran

19. John, look at the time. 　　　　　you play the piano at such a late hour?

　 　A. Must　　 B. Can　　　 C. May　　 D. Need

18. This is one of the questions _____ at the meeting now.

A. to discuss　　 B. to be discussed　　 C. being discussed　　 D. discussed

17. It was the first time that we had come to this city and it took us several hours to find a place_____.

A. living　　 B. to be live　　 C. to live　　 D. to be lived in