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ConstantlyListeningtopopularmusicwiththeirearphoneson

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问题详情:

ConstantlyListeningtopopularmusicwiththeirearphoneson

Constantly Listening to popular music with their earphones on _____ caused hearing loss in some teenagers.

  A. is                   B. are                 C. has                D. have

【回答】

C

知识点:一般现在时及其被动式

题型:选择题

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