(·辽宁高考)One of our rules is that every student wear school uniform while at school.A.

问题补充：

(·辽宁高考)One of our rules is that every student wear school uniform while at school.

A. might

B. could

C. shall

D. will

答案：

A. might

B. could

(答案→)C. shall

D. will

解析：选C考查情态动词。句意：我们的一条规定是学生在校时都必须要穿校服。shall用于第二、三人称，表示说话人给对方命令、警告、允诺或威胁。