-Listen! A wolf is crying! -It _______ be a wolf, because a wolf never comes out at this time. A.mus...
2022-08-07 22:14:20 28次 云南省文山州2019-20200学年九年级上学期期末英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
-Listen! A wolf is crying!
-It _______ be a wolf, because a wolf never comes out at this time.
A.mustn’t B.needn’t C.can’t D.don’t
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