题目内容
（请给出正确答案）
A．must have been provided
B．might have provided
C．must have provided
D．might have been provided
如果结果不匹配，请 联系老师 获取答案
更多“A．must have been providedB．mig…”相关的问题
Somebody______here only this morning.
A．must be
B．can be
C．must have been
D．should have been
A．must
B．could
C．should
D．might
I didn't hear the phone. I ______ asleep.
A．must be
B．must have been
C．should be
D．should have been
The streets are all wet. It______ during the night.
A．must be raining
B．must have been rain
C．had to rain
D．must have rained
A.must be
B.has been built
C.must have been
D.could have been
Look, what you have done! You ______ must have been move careful.
A．must
B．might
C．should
D．would
A．must have been to
B．needn't have been to
C．should have been to
D．couldn't have been to
He______at the party but I didnt notice him there.
A．must have been
B．may have been
C．would have been
D．must be
Mary hasn't turned up yet. I think the train she took______.
A．must be delayed
B．might be delayed
C．might have been delayed
D．should have been delayed
The crotch rivet would not have been removed, ______.
A．if the cowboys hadn't found the problem with it
B．if the cowboys hadn't crouched too close to the camp fire
C．if Levi hadn't paid enough attention to the problem with it from early on
D．if the company official hadn't experienced the problem first hand
