单项选择题

Nearly half of all college students ______ while they are in school.

A．are free
B．are busy
C．have part-time (兼职的) jobs
D．have full time jobs
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单项选择题
The parents of children who attend private schools ______ for their children's education.
A．have to pay
B．have to make preparations
C．don' t have to pay
D．don' t have to make preparation
单项选择题
The best title for the passage would be______.
A．Schools in the USA
B．Elementary Schools in the USA
C．Secondary Schools in the USA
D．Colleges and Universities in the USA
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