单项选择题

One should always be careful of ( ) health.

A、their
B、one's
C、his
D、hers
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单项选择题
The scientist and professor ( )our meeting.
A、were to attend
B、are to attend
C、is to attend
D、is attend
单项选择题
We bought ( ) a car last week.
A、ourself
B、we
C、ourselves
D、us
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