单项选择题

______ , he would have got through the test.

A．Had he worked harder
B．He had worked harder
C．If he have worked harder
D．If he worked harder
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单项选择题
With the help of the experts, the factory produced ______ machines in 2001 as the year before.
A．as twice many
B．as many as twice
C．twice as many
D．as twice as many
单项选择题
This bed ______ too much room.
A．takes off
B．takes on
C．takes up
D．takes over
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