单项选择题

It is reported that the police ______ the case.

A．is looking on
B．are looking into
C．is looking after
D．are looking up
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单项选择题
It ______ fine, we decided to have an outing.
A．is
B．was
C．were
D．being
单项选择题
I ______ English ever since I came here in the United States three years ago.
A．am learning
B．was learning
C．have been learning
D．have learned
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