第一节:单项填空:
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。共15小题;每小题1分,满分15分。
21.-What did Mr Smith
do in the middle of the night?
-Well, I'm not sure, but he was often heard ___________.
A.singing the same
song
B.to sing the same song
C.sing a same
song
D.to be playing same song