---Look! A book is on the floor .Whose is it? ---It____be Rick’s.It has his name on it. A. mustn’t B...
2022-11-05 03:15:05 100次 济南市2017-2018学年九年级期末复习英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
---Look! A book is on the floor .Whose is it?
---It____be Rick’s.It has his name on it.
A. mustn’t B. can’t C. must D. need
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