12.Great changes place in China since 1978 .

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12.Great changes place in China since 1978 .
A.have been taken B.have taken C.has been taken D.took 选哪个,

Great changes （B.have taken） place in China since 1978 .
从1978年以来,在中国发生了巨大的变化.
take place,发生.这个词组只有主动语态,不能用被动.所以A和C项都是错的.时间状语是since引导的一段延续性的,要用现在完成时态.D项是过去式,不能选.

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