单项选择题

It is necessary that an efficient worker ______ his work on time.

A．accomplishes
B．can accomplish
C．accomplish
D．has accomplished
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单项选择题
______, the new electronic device they designed is now in regular operation.
A．With the solved problem
B．With this problem being solved
C．With the problem solved
D．With this problem to solve
单项选择题
There was no sense ______ him to come early since everything was ready.
A．to ask
B．to have asked
C．in asking
D．being asking
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