单项选择题

______ so many efforts in such a short period of time.

A. Never have any student made

B. Never have a student made
C. Never has any student made

D. Never did a student make
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The lady politely ______ me to get into the manager's office.
A. requested
B. shouted
C. nodded

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Everything is in great ______ in the countries suffering from the war.
A. ask
B. requirement
C. demand

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