In my opinion all Mr. Li good to his students in his class at present. He is very strict

问题补充：

In my opinion, all Mr. Li good to his students in his class at present. He is very strict with them in their studies.

A. does does does

B. does do did

C. does does do

D. did do does

答案：

A. does does does

B. does do did

(答案→)C. does does do

D. did do does

解析：考查强调句，根据句子结构可知，all Mr Li does是主语从句，第二个does是强调，意为的确，第三个do是do good to对……有好处的词组

句意为，在我看来，李先生所有做的事情的确对他班级的学生是有好处的，他在学习上对他们非常严格。