单项选择题

--I really don't know how to thank you enough.
-- ______.

A．No problem
B．Think nothing of it
C．Not at all
D．It doesn't matter
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单项选择题
A．whichB．whatC．thatD．where
A．which
B．what
C．that
D．where
单项选择题
I hope you don't mind me asking, ______ where did you buy those shoes
A．so
B．and
C．yet
D．but
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