We finished the run in less than half the time ________ . [ ]A. allowing

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We finished the run in less than half the time  ________ . [     ]
A. allowing
B. to allow
C. allowed
D. allows

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举一反三

Throughout history, the language________ by a powerful group spreads across a civilization. [ ]

A. speaking
B. spoken
C. to speak
D. to be spoken

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I refused his request, _________ that it was impossible to do it.   [     ]
A. believed
B. to believe
C. convinced
D. to convince

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12_________ 5 makes 7.     [     ]
A. taking away
B. taken away
C. to be taken away
D. to take away

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__________for over 3 months, the poor boy was still unconscious.    [     ]
A. Having treated
B. Treated
C. Having cured
D. Cured

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The subject isn"t very________well in the book.    [     ]
A. dealing with
B. dealt with
C. put with
D. putting with

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