单项选择题

It's really a difficult problem to ______.

A．look at
B．make out
C．deal with
D．dwell on
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单项选择题
He couldn't ______ with the noise in the room.
A．put on
B．put across
C．put up
D．put off
单项选择题
Tom placed too much ______ on sports but not enough on his studies.
A．interest
B．emphasis
C．efforts
D．time
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