问题
选择题
Although there are no classes in the afternoon now, no student ______ go out of school without the head teacher’s permission.
A．will
B．must
C．may
D．shall
答案
答案：D
考查情态动词用法。当shall用于第二第三人称时，表示命令，警告，允诺，威胁，法律，规范。根据the teacher's permission可知。