语法与词汇
2.
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
【正确答案】
C
【答案解析】
本题考查be said to do的用法。be said to do是固定结构，由句中的时间状语in the past year可知，动作发生在谓语动作之前，故应使用动词不定式的完成式作宾语，因此答案为[C]项。
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