单项选择题

The engine of your car needs ______.

A．to clean
B．clean
C．cleaning
D．cleaned
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单项选择题
The computer will ______ in this department.
A．remain permanently
B．remain permanent
C．remind permanently
D．remind permanent
单项选择题
______ generalists, business also needs specialists.
A．Beside
B．Besides
C．Except
D．Except for
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