--Must we clean the classroom before breakfast?--_______
A.Yes, you may. B.No, you mustn’t. C.Yes, of course. D.No, you needn’t.正确答案D
--Must we clean the classroom before breakfast?--_______
A.Yes, you may. B.No, you mustn’t. C.Yes, of course. D.No, you needn’t.正确答案D