单项选择题

Mr. Morton gradually ______ a knowledge of the subject.

A．attained
B．required
C．acquired
D．enquired
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单项选择题
Dominic, the most ______ pupil in class, will go to Harvard to study this September.
A．indigenous
B．indiscreet
C．indulgent
D．industrious
单项选择题
When you get excited, try to hold yourself ______.
A．up
B．down
C．off
D．in
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