单项选择题

I have not decided which seat

A．to sit
B．is to sit
C．to sit on
D．is for sitting
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单项选择题
All ______ is a continuous supply of the basic necessities of life.
A．what is need
B．for our needs
C．the thing needed
D．that is needed
单项选择题
Susan wants to know whether the measures have been agreed
A．to
B．with
C．over
D．on
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