单项选择题

The doctor's practice has ______ because of his carelessness.

A．dropped by
B．dropped in
C．dropped off
D．dropped out
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单项选择题
If newspapermen cannot get facts for their stories, they sometimes ______ their imaginations.
A．bring out
B．break in
C．come through
D．draw on
单项选择题
The fact ______ you haven't got these qualifications doesn't necessarily mean you won't be able to enter the university.
A．what
B．which
C．that
D．why
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