单项选择题

The number of students in a foreign languages class ______ usually limited to no more than thirty.

A．have
B．are
C．is
D．were
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单项选择题
Trains used to stop here to ______ us.
A．get off
B．pick up
C．pull up
D．get past
单项选择题
The software ______ and simplifies business procedures such as budgeting.
A．puts on
B．puts forward
C．takes after
D．speeds up
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