Computers must be of great use to doing the scientific research. A. theseB. whoever C. t

发布时间：2020-08-14 23:05:18

  Computers must be of great use to      doing the scientific research. A. theseB. whoever C. thoseD. whomever

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those=the people(那些人)，后面的doing…作其定语。思考：若将doing改为do，该用哪个答案？
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