The school board is made up of parents who ________ to make decisions about school affairsA.had been electedB.had electedC.have been electedD.have elected
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C解析elect意为选举,推选,它的主语是关系词who所代指的parents,该句句意为,学校的董事会由那些被推选来就学校事务做决定的父母组成的。根据句意可知,父母和elect之间是被动关系,因此排除BD选项。因为主句is made up of是一般现在时,故排除A项,选择C项,表示已经被推选出来。【考点定位】考察时态语态。