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【题目】What shall we use for power when all the oil in the world ?

A. gave out B. was given out

C. has given out D. has been given out

【答案】C

【解考查动词的时态和语态。give out意为“用尽”时,其动作发出者常为物,常作不及物动词,没有被动形式;主句是一般将来时态时,在时间及条件状语从句中需用现在完成时代替将来完成时,故选C。

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