点击关注“零食英语”，获取最实用的英语学习知识。许多同学都认为，shall只用于第一人称，若用于第二人称或第三人称，则要用will。但是，请看下面这道高考题：One of our rules is that every student ______ wear school uniform while at school. A. might B. could C. sh...