单项选择题

Seeing the soldiers well ______for the flood-fight, the general nodded with satisfaction.

A．preparing
B．prepared
C．prepare
D．having prepared
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单项选择题
John, ______the bet, had to pay for the dinner.
A．lost
B．having lost
C．losing
D．having loss
单项选择题
What a pity! Considering his ability and experience, he______better.
A．need have done
B．must have done
C．can have done
D．might have done
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