单项选择题

The police officer has begun to ______ the case.

A．look out
B．look into
C．look on
D．look over
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单项选择题
If you had told me about your difficulty, I ______ able to help you.
A．will have been
B．would have been
C．will be
D．would be
单项选择题
Although I have lived in this country for just three months, I ______ the food there.
A．used to eating
B．am used to eat
C．am used to eating
D．used to eat
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