---Mom,mayIputoffthehomeworktilltomorrow?It’sSaturdayto...

问题详情：

--- Mom, may I put off the homework till tomorrow? It’s Saturday today.

    --- No, you _________. You must finish it today. Tomorrow we’ll visit your grandparents.                                            

    A. may not       B. can’t           C. mustn’t           D. needn’t

【回答】

 B

知识点：情态动词

题型：选择题