单项选择题

He took the medicine, but it didn't have any______.

A．answer
B．cause
C．effect
D．work
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单项选择题
Robots have already______ human tasks in the industrial field.
A．taken on
B．taken out
C．taken up
D．taken over
单项选择题
The girl is not happy at the new school. She has______ friends there.
A．few
B．a few
C．little
D．quite a few
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