( ) your math teacher of medium build? yes he ( ) 填is还是does

问题描述:

( ) your math teacher of medium build? yes he ( ) 填is还是does

应该填 Is ,is
( Is ) your math teacher of medium build?yes he (is )
does 后面必须有动词原形,而本句没有动词,只有形容词 mediun ,所以必须用 be 动词.