单项选择题

My father likes sports ______ my mother is interested in music.

A．when
B．as
C．while
D．although
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单项选择题
Doctors are now able to ______ people of many diseases, which in former time would have killed them.
A．cure
B．treat
C．had
D．recover
单项选择题
Had he worked harder, he ______ the exams.
A．must have got through
B．would have got through
C．would get through
D．could get through
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