单项选择题

The scientists wanted to keep people（）about the breakthrough in their experiment.

A. inform
B. informed
C. informing
D. to inform

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单项选择题
The message（）Mr. Black was elected chairman of the committee arrived just in time.

A. which
B. what
C. that
D. how
单项选择题
By the time you come to see me next month, I（）my term paper.

A. have completed
B. complete
C. am completing
D. will have completed
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