In my opinion, all Mr White good to his students in his class at present. He is very strict in their study.
A. does does does
B. does did do
C. does does do
D. did do does
网友回答
A. does does does
B. does did do
(答案→)C. does does do
D. did do does
解析： Mr White does为定语从句修饰all；后为强调形式does do。