题目内容
He ___ to bed, for the light is out.
A.must have gone B.must go C.can have gone D.can go
He looks very tired . He ____ to bed too late last night .
A . must go B . must have gone C . could go D . didn''t go
The light in his room is still on, so he ________ to bed.
A. mustn’t have gone
B. must have gone
C. shouldn’t have gone
D. can’t have gone
His health requires that he ________ to bed early.
A. go B. goes C. went D. going