单项选择题


A．studied
B．understood
C．produced
D．supported
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单项选择题
Dr. Fields received (so large) bill when he (checked out of) the hotel (that) he did not have enough money to (pay for) a taxi to the airport.
A．so large
B．checked out of
C．that
D．pay for
单项选择题
The (anti—smoking) campaign (on campus) has made (quite an impact) (with) the students.
A．anti—smoking
B．on campus
C．quite an impact
D．with
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