单项选择题

(There are) twelve people (take part in) the experiment, four (working) (as a) group.

A．A
B．B
C．C
D．D
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单项选择题
We were_________ for half an hour in the traffic and so we arrived late.
A．kept up
B．held up
C．cut up
D．brought up
单项选择题
The doctor advised her that she________ enough rest before going back to work.
A．to get
B．get
C．gets
D．got
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