单项选择题

Bill couldn't ______ an answer when the teacher asked him why he was late.

A．come up with
B．come over
C．come on
D．come up to
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单项选择题
The news you told me the other day has yet to be ______ .
A．affirmed
B．informed
C．conformed
D．confirmed
单项选择题
Quite a lot of people watch TV only to ______ time.
A．waste
B．spend
C．kill
D．while
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