The professor you at the party was my tutor (导师).
A. making himself knowing
B. making him known for
C. making himself known to
D. makes he known to
网友回答
A. making himself knowing
B. making him known for
(答案→)C. making himself known to
D. makes he known to
解析：因The professor与make是主动关系，用现在分词；使自己被别人了解，know用过去分词。make oneself known to sb. =introduce oneself to sb.