单项选择题

There being no cause for alarm, you______in such a panic yesterday.

A. need not act
B. did not need to act
C. need not have acted
D. did not need to have acted
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The professor persisted in attending the conference ______his illness and the heavy storm.
A. given
B. despite
C. in spite
D. although
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I walked three kilometers yesterday and am ______ it now; my legs hurt.
A. paying
B. paying for
C. paying back
D. paying off
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