单项选择题

During his stay in France, he picked ______ quite a bit of French.

A．on
B．up
C．at
D．over
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单项选择题
People who ______ work should
A．will, be made to work
B．won't, be made work
C．won't, be made to work
D．will, be made working
单项选择题
He's a ______ businessman. He makes a profit at everything he tries.
A．bright
B．intelligent'
C．skillful
D．shrewd
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