单项选择题

—Must I turn the paper in at the end of this week
—No. you ______.

A．mustn't
B．needn't
C．don't
D．shouldn't
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单项选择题
Gazing up into the professor's eyes, she seemed to ______ all he said.
A．take in
B．take over
C．take on
D．take to
单项选择题
Mary has a 15-year contract with the company. By June next year, Mary ______ with this company for 14 years.
A．will have been working
B．will have worked
C．will work
D．works
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