单项选择题

I am not certain whether he will come.

A．determined
B．sure
C．sorry
D．glad
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单项选择题
It s impolite to cut inwhen two persons are holding a conversation.
A．leave
B．talk loudly
C．standup
D．interrupt
单项选择题
During his lifetime he was able to accumulatequite a fortune.
A．control
B．spend
C．collect
D．exchange
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