——,glasses can correct most sight defects in healthy eyes 为什么填when well fitted
问题描述：
——,glasses can correct most sight defects in healthy eyes 为什么填when well fitted
答
when well fitted是省略了的时间状语从句, 相当于: when glasses are well fitted 当从句的主语与主句的主语相同,且从句的谓动含有be动词时,可以省略主语及be 动词. 所以此句要填when well fitted. 句意: 当(眼镜)配...