题目

 More than one student ________ sent to the hardest place since 1979 A. is   B. are   C. has been   D. have been 答案:【解析】选C。句意:自从1979年以来不止一个学生被送到最艰苦的地方去。和since连用,应用现在完成时;more than one + 单数名词作主语时,谓语动词用单数形式。
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