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17.More than 100students in that school_________ abroad for further study so far.(  )
A.are sentB.were sentC.had been sentD.have been sent

分析 到目前为止,那个学校已经有100多人被送往国外深造了.

解答 答案是. 考查被动语态,.本题考查现在完成时和被动语态,so far常与现在完成时连用,student是和send是动宾关系,即,学生是被派往国外的,应该使用被动语态,故选D.

点评 被动语态由"助动词be+及物动词的过去分词"构成.被动语态的时态变化只改变be的形式,过去分词部分不变.疑问式和否定式的变化也如此.掌握各种时态的被动语态是解题的关键.

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