单项选择题

Every knife and fork __________ carefully.

A．have cleaned
B．has cleaned
C．have been cleaned
D．has been cleaned
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单项选择题
It is reported that crimes are most likely to happen in cities __________ a large percentage of unemployment.
A．which they have
B．that having
C．that have
D．where have
单项选择题
enough time to study, I would have been able to enter university.
A．Have I
B．I have
C．Had I
D．I had
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