单项选择题

A．It must be the right height.
B．It must have several gears.
C．It must have good tires.
D．It must be the right weight.
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单项选择题
A．On television.B．At registration.C．In class.D．At work.
A．On television.
B．At registration.
C．In class.
D．At work.
单项选择题
A．They were drawing pictures.B．They were watching TV.C．They were making a telephone call.D．They were tidying up the drawing room.
A．They were drawing pictures.
B．They were watching TV.
C．They were making a telephone call.
D．They were tidying up the drawing room.
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