这题选哪个,请详细说明以下原因~
问题描述：
这题选哪个,请详细说明以下原因~
In my opinion,all Mr.White_____good to his students in his class at pressent,He is very strict in their study.
A.does does does B.does do do C.does does do D.did do does
答
C第1个does是在主语从句中作谓语动词：all Mr.White does 由于后面有at present,表示这里是一般现在时,因此对应地用does而不是did第2个does是谓语助动词,用在这里表示强调.如果省略也是可以的,则表示不强调.第3个do...