单项选择题

The manufacturers hoped that the motor show would ______ their car sales.

A．promise
B．lift
C．intensify
D．boost
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单项选择题
We can rely on William to carry out this mission, for his judgment is always ______.
A．inexplicable
B．healthy
C．sound
D．straight
单项选择题
When the new assembly line is complete, the factory will turn ______ one thousand cars per day.
A．in
B．off
C．out
D．over
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