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职称英语
Only after they had performed hundreds of experiments did they succeed in (solve
Only after they had performed hundreds of experiments did they succeed in (solve
游客
2023-09-25
35
管理
问题
Only after they had performed hundreds of experiments did they succeed in (solve) ______the problem.
选项
答案
solving
解析
本题考查动名词的用法。英语中介词后需接动名词，动名词由动词加-ing构成，起名词的作用。本题中，solve的动名词形式solving作介词in的介词宾语，故填solving。
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