55、Stop　　　　　　 (play). It’s time for class.

54、They want to go there on foot. So　　　　 　 Lucy . (do)

53、Did you see him　　　　　　　 (wash) when you got to his home?

52、He kept me 　　　　　　　　　　 　(wait) for him for a long time.

51、Yesterday my mother told me　　　　　　　 (not play) with fire. It’s dangerous.

50、Will you please 　　　　　　　 (come) here on time next time.

49、I don’t think that it 　　　　 (rain) tomorrow.

48、Why not　　　　　　　　　　 (go) there on foot?

47、I don’t know how　　　　　　　　　 (answer) this question.

46、Li Ping usually 　　　　 (watch) TV after supper.