单项选择题

What should the listeners do after they have checked their packets?
A．Come to the front of the classroom.
B．Talk to the technician.
C．Turn on the monitor.
D．Find their seats.

A.Come
B.
B．Talk
C.
C．Turn
D.
D．Find
E.

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What should the listeners do after they have checked their packets?A．Come to the front of the classroom.B．Talk to the technician.C．Turn on the monitor.D．Find their seats.