问题
选择题
-Must we clean the classroom now?
-No, you _____.[ ]
A. must
B. needn't
C. aren't
D. must not
答案
答案：B
搜题请搜索小程序“爱下问搜题”
-Must we clean the classroom now?
-No, you _____.[ ]
A. must
B. needn't
C. aren't
D. must not
答案：B