"Things ________ never come again ! "I couldn"t help talk- ing to myself.

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"Things ________ never come again ! "I couldn"t help talk-   ing to myself.     [     ]
A. lost
B . losing
C. to lose
D. have lost

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举一反三

She wants her paintings  ________in the gallery, but we   don"t think they would be very popular.    [     ]
A. display
B. to display
C. displaying
D. displayed

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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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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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