单项选择题

The examination has been cancelled. You（）all that review, after all．

A．didn't need to do
B．needn't do
C．needn't have done
D．needn't to do

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单项选择题
The prison guards were armed and ready to shoot if（）in any way.

A. incurred
B. provoked
C. poked
D. intervened
单项选择题
The（）friend was exposed in the end to be hidden rival who had been plotting against the company's marketing in Hong Kong

A．professed
B．announced
C．exclaimed
D．declared
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