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.  Four-fifths of the crop ______.
A.are ruinedB.was ruinedC.were ruinedD.have been ruined

答案
B
解析

核心考点
试题【.  Four-fifths of the crop ______.A.are ruinedB.was ruinedC.were ruinedD.have be】;主要考察你对一般现在时等知识点的理解。[详细]
举一反三

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A.involveB.involvesC.involvingD.to involve

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