Professor Johnson is said______some significant advance in his research in the p

游客2024-10-06  8

问题 Professor Johnson is said______some significant advance in his research in the past year.

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

答案 C

解析 (be said)to have done sth.意为“据说已经……”。本题考查不定式及时态的用法。to have done sth.在该句可以满足(be said)to do sth.的习惯用法,又因为不定式动作发生在主句动作之前,故C符合要求。
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