单项选择题

Peter () the driver's test, but he was not calm enough in the last minutes.

A．can have passed
B．ought to have passed
C．might have passed
D．must have passed

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单项选择题
We are told that the order has not yet come, so we have nothing to do now but ().

A．wait
B．to be waiting
C．to wait
D．waiting
单项选择题
Although it is the first time he takes up such a big task, never ().

A．he has been
B．has he been
C．has been he
D．been has he
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