单项选择题

We could not have completed the job in time if it ______ for their help.

A．is not
B．has not been
C．was not
D．had not been
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单项选择题
A．She doesn t like it.B．She is confident about it.C．She s not sure if she can do well.D．She believes it fits her well.
A．She doesn"t like it.
B．She is confident about it.
C．She"s not sure if she can do well.
D．She believes it fits her well.
单项选择题
By the time you get to New York, the parcel ______ there.
A．is arrived
B．will arrive
C．will have arrived
D．had arrived
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