单项选择题

_____ his lecture is short，it gives us a clear picture of the new program．

A．If
B．Because
C．Although
D．When
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单项选择题
The general manager has promised to _____ the matter in person．
A．get up
B．look into
C．see off
D．put on
单项选择题
If you move，you must inform us _____ the change of you adderss.
A．with
B．for
C．in
D．of
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