单项选择题

Mack is very busy; he is a full-time student, while______ a part-time job.

A．to hold
B．being held
C．held
D．holding
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单项选择题
It was a big celebration-______people gathered at the city square.
A．five thousands
B．five thousand
C．thousands
D．thousand of
单项选择题
Alice was about to______, when she suddenly found an answer to the question. B． look up
A．make up
B．look up
C．turn up
D．give up
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