单项选择题

How much of your country's electrical supply is ______from water power

A. deduced
B. derived
C. detached
D. declined
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单项选择题
The government ______ to approve the use of wide-spead surveillance when the Justice Department took objections.
A. is going
B. had been
C. was about
D. is coming
单项选择题
He ought to attend the meeting, _________
A. should he
B. ought he
C. shouldn't he
D. oughtn't he
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