Michelle is said ______ some progress in her scientific research in the past yea

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问题 Michelle is said ______ some progress in her scientific research in the past year.

选项 A、to have made
B、to make
C、making
D、having made

答案 A

解析不定式的完成体。不定式的完成式表示动作发生在谓语动词之前，从该句中的时间状语inthe past year可以看出动作已经发生并完成。另外，is said后只能跟不定式，不能跟动词-ing形式，综上所述．只有A为正确答案。

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