Computersmustbeofgreatuseto______

发布时间：2020-07-10 19:33:06

Computers must be of great use to ________ doing the scientific research.













A.these












B.whoever











C.those











D.whomever

网友回答

C解析whoever和whomever后面跟一个从句；doing the scientific research为-ing形式短语作定语，相当于一个定语从句(those)who are doing…．
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