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Professor Johnson is said__________some significant advance in his research in t
Professor Johnson is said__________some significant advance in his research in t
游客
2024-10-31
25
管理
问题
Professor Johnson is said__________some significant advance in his research in the past year.
选项
A、having made
B、making
C、to have made
D、to make
答案
C
解析
语法结构。由于Professor Johnson去年的研究取得重大进展先于“据说”之前,故应用不定式完成式。故D不对。be said to do/have done/be为常用结构。
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