单项选择题

He is assigned to oversee the production of the assembly lines.

A．supervise
B．watch
C．suspect
D．predict
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单项选择题
When does the next train depart
A．pull up
B．pull down
C．pull out
D．pull in
单项选择题
He decided to overcome his shortcomings.
A．convert
B．convict
C．conquer
D．convey
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