单项选择题

She didn't know ______ to express her ideas in English clearly in public.

A. which
B. why
C. what
D. how
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He was attending a meeting, ______ he would have come to your party yesterday.
A. unless
B. when
C. but
D. or
单项选择题
We must find a way to cut prices ______ reducing our profits too much.
A. without
B. despite
C. with
D. for
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