–Listen! Helen is singing in the next room. -It ___ be Helen. She has gone to Beijing. A. can’t B. m...
2022-11-08 02:43:02 139次 绵阳关帝中学2017秋人教新目标九上 Unit 8 单元测试 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
–Listen! Helen is singing in the next room. -It ___ be Helen. She has gone to Beijing.
A. can’t B. mustn’t C. may D. should
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