单项选择题

The young man assured the boss that he would ______ all his energies to do the job well.

A．call on
B．call forth
C．call at
D．call off
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单项选择题
I prefer ______ .
A．to read rather than watch TV
B．to read rather than watching TV
C．reading rather than watch TV
D．reading rather than to watch TV
单项选择题
After the theft of his car he put in an insurance ______ for $4500.
A．invoice
B．account
C．claim
D．assessment
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