A-A+
A teacher ______ do every exercise but a stude
问题详情
A teacher ______ do every exercise but a student ______.
A．may not ; must
B．needn"t; must
C．can"t; should
D．mustn"t; should请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：needn't表示“不必”，而mustn't表示“禁止，不许”。结合句意，此题应选B项。
