单选题
14.
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】
be said to…为习惯用法,表示“据说……”,且“研究取得进展”是在“据说”前发生的事实,所以要用不定式的完成式。故C项正确。
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