Ittookagreatdealofcouragetoadm

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It took a great deal of courage to admit that all his efforts had been ____.

A．in vain

B．in turn

C．in return

D．in danger

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A．seemed	B．appeared
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-I have experience __________ cooking at an Italian restaurant.

A．of	B．in
C．at	D．on

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A．flows	B．columns
C．floods	D．currents

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A．effective	B．efficient
C．flexible	D．sufficient

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It was nearly an hour __________ the sleeping pill __________ effect.

A．when; took	B．before; took
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