Question

－May I watch TV now, mum? －No, you ________． You ________ do your homework first． [　　] A． don't, must B． don't, can't C． can't, must D． can't, can

Answer 1

答案：C
解析：

本题旨在考察学生情态动词的用法。may意为“可以”，其回答可用may not, can't或mustn't。can't意为“不能”，can意为“能够”，must意为“必须”。从题意“不，你不能。你必须先做你的家庭作业。”可知答案选C。