单项选择题

You don"t need ______ for his permission every time you want to leave the room.

A．to ask
B．ask
C．asking
D．being asked
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单项选择题
In the U.S., ______ the question of Chinese FDI is particularly controversial, China s presence is punier still.
A．Although
B．Where
C．Whether
D．There
单项选择题
He is interior ______ you in all respects.
A．than
B．to
C．against
D．on
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