问题
_______ we clean the classroom atonce — No, you _______. You _______ clean it after school.
A:Must; needn’t; may
B:Must; mustn’t; can
C:Shall; can’t; must
D:Need; mustn’t; may
B:Must; mustn’t; can
C:Shall; can’t; must
D:Need; mustn’t; may
正确答案是：
同类题型
On Nie’er Square, there are always many people dancing together if it _______ in the evening.
The window is dirty.—I know. It ______ for ages and I’m consideringgiving the task to our children.
Is it time for us lunch—-No , it’s only ten o’clock.
An opinion is _____ someone believes is true but has not been proved.