单项选择题

The new research project was led by the()engineer.

A.main
B.major
C.chief
D.primary

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单项选择题
—I'm afraid we can't have him()the paper in this way. —We should have him()at once. I think.

A.waste; scolding
B.wasting; scolded
C.wasted; scold
D.waste; to scold
单项选择题
Commercial companies()millions of dollars each year for the government.

A.take away
B.bring in
C.bring out
D.lose
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