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Professor Johnson is said ______ some significant advance in his research in the
Professor Johnson is said ______ some significant advance in his research in the
游客
2023-11-08
15
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
is said后跟不定式,不能跟动词-ing形式,排除A和B。从句中的时间状语in the pastyear可以看出动作已经发生并完成。C项to have made是不定式的完成式,表示动作发生在谓语动词之前,而D项to make表示动作没有发生,故C项正确。
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