单项选择题

Robots are used ______ a lot of work in place of man.

A．to do
B．to doing
C．doing
D．to be done
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单项选择题
Different cultures have different communication ______.
A．styles
B．crafts
C．designs
D．symbols
单项选择题
She is very careful. She ______ very few mistakes in her work.
A．does
B．makes
C．takes
D．gets
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