单项选择题

The reason ______ he didn't come was ______ he was ill.

A. why; that
B. that; why
C. for that; that
D. for which; what
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单项选择题
She is willing to help you, ______ busy she is.
A. what
B. how
C. however
D. whatever
单项选择题
______ was said have must be kept secret.
A. Whatever
B. Whichever
C. However
D. That
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