单项选择题

Bob assured his boss that he would ______all his energies in doing this new job.

A. call for
B. call off
C. call forth
D. call on
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单项选择题
Sometimes the tension produced by fears is so great that we cannot suppress it. At such times we need to the tension by laughing or crying.
A. discard
B. disperse
C. disguise
D. discharge
单项选择题
We're late. I expect the film ______ by the time we get to the cinem
a.A. will have startedB. has startedC. will startD. may start
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