. He is very popular among his students as he always tries to make them in his lectures.

问题补充：

. He is very popular among his students as he always tries to make them in his lectures.

A. interested

B. interesting

C. interest

D. to interest

答案：

(答案→)A. interested

B. interesting

C. interest

D. to interest

解析：

A。过去分词interested在此已转化为形容词，interested in意为“对……感趣”。