单项选择题

Professor Smith________in this famous university for tbree decades by next winter.

A．will work
B．has worked
C．has been working
D．will have workcd
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单项选择题
We________neighbors for help when we move to a new place.
A．look for
B．look to
C．see to
D．see off
单项选择题
The president________NATO of paying too little attention to the ethnic tensions.
A．abused
B．accounted
C．accused
D．amused
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