单项选择题

He had a bad cold. _______ is why he didn’’t come.

A．It
B．This
C．That
D．What
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单项选择题
A．asB．howC．thatD．which
A．as
B．how
C．that
D．which
单项选择题
Things might have been much worse ff the mother______ on her right to keep the baby.
A．has been insisting
B．had insisted
C．would insist
D．’’insisted
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