46.　 Just then I was frightened, I heard someone ___________ (walk) towards to me.

45.　 He was made ____________ (sing) a song for his little mistake.

44.　 I’m sorry ___________ (keep) you __________ (wait) for me for such a long time.

43.　 So far, they_________________ (plant) thousands of trees.

42.　 His uncle _______________ (return) in three days.

41.　 These homeless children _____________ (look) after in the SOS village.

40.　 She said she _________________ (not write) to her parents for a long time.

39.　 My brother will call me as soon as he ______________ (reach) here.

38.　 You shouldn’t make him______________ (stand) so long.

37.　 Many tall buildings ________________ (build) in our city during the last few years.