单项选择题

A red flag was placed there as a token of danger.

A．sign
B．substitute
C．proof
D．target
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单项选择题
The council meeting terminated at 2 o'clock.
A．began
B．continued
C．ended
D．resumed
单项选择题
Our statistics show that we consume all that we are capable of producing.
A．waste
B．buy
C．use
D．sell
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