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Professor Johnson is said _____ some significant advance in

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/29 09:00:18
Professor Johnson is said _____ some significant advance in his research in the past year
A.having made
B.making
C.to have made
D.to make
e said to do sth.而不是be said doing sth.;
而且,如果动词不定式中的动作发生在主句的谓语动词所表示的动作发生的时间以前,那么要用动词不定式的完成式,即to have done sth..