—Let's go to the movies tonight. —Sorry.
题型:选择题
问题:
—Let's go to the movies tonight.
—Sorry. I __ . I have to help my mother wash clothes. [ ]
A. mustn't
B. needn't
C. can't
—Let's go to the movies tonight.
—Sorry. I __ . I have to help my mother wash clothes. [ ]
A. mustn't
B. needn't
C. can't