.—What’s the matter with the man hanging his head there? —Well, if you _______ know, he was caught stealing my bike.
#88321
A
must
B
may
C
can
D
shall
推荐题目
You look very tired. You ____ late last night.
#87853
A
needn’t sit up
B
didn’t need to sit up
C
shouldn’t sit up
D
needn’t have sat up