单项选择题

________your letter, I am pleased to inform you that you are to receive the order by the end of this week.

A．With regard to
B．Thanks to
C．So long as
D．As far as
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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
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
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