单项选择题

You the clothes! We have a washerwoman to do that sort of thing.

A．shouldn"t have washed
B．mustn"t have washed
C．can not have washed
D．needn"t have washed
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单项选择题
Five minutes eaflier, and we the last bus.
A．had caught
B．should have caught
C．could have caught
D．caught
单项选择题
______ cease advertising, prices would be significantly reduced.
A．Were they to
B．Could they
C．If they
D．Would they
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