Many workers were organized to clear away remained of the World Trade Center.A. thoseB. t

发布时间：2020-08-14 23:07:18

Many workers were organized to clear away     remained of the World Trade
Center.A. thoseB. thatC. whatD. where

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该题空格处缺少的是连词，且在从句中作主语，所以排除A,D; that在名词性从句中只起连接作用。
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