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EnglishinAmerica,hewasconsideredoneofthebestteachersintheuniversity.A.studyingB.StudiedC.HavingstudiedD.Havestudied选哪个?为什么?

题目详情
______ English in America,he was considered one of the best teachers in the university.
A.studying B.Studied C.Having studied D.Have studied选哪个?为什么?
▼优质解答
答案和解析
选C
having done做状语表示动作的完成以及比主句动作先一步
先学了英语,再被大学老师录取