单项选择题

Astronomers say the universe is ______ even faster than they thought.

A．stretching
B．extending
C．prolonging
D．expanding
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单项选择题
The potatoes can be made ______ and reheated in the microwave when every one is present.
A．a little time ahead
B．a little ahead of time
C．ahead of time a little
D．ahead of a little time
单项选择题
In order to run your restaurant well, your attendants must ______ the needs of your customers.
A．look into
B．see to
C．make over
D．come through
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