单项选择题

______ your homework and make sure that you don't ______ any mistakes.

A．Do; do
B．Make; make
C．Make; do
D．Do; make
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单项选择题
In my opinion, you can widen the ________ of these improvements through your active participation.
A．dimension
B．volume
C．magnitude
D．scope
单项选择题
Hospital doctors don' t go out very often as their work ______ all their time.
A．takes away
B．takes in
C．takes over
D．takes up
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