单项选择题

You should be content ______ what you have.

A．to
B．about
C．with
D．for
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单项选择题
Are you serious in ______ such a view
A．putting on
B．putting off
C．putting up
D．putting forward
单项选择题
Dr. Robert went to New York, bought some books and ______.
A．visiting his daughter
B．to visit his daughter
C．visit his daughter
D．visited his daughter
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