---Isn't that Ann's husband over there?---No, it ______ be him. I'm sure he doesn't wear glasses.A.can'tB.must notC.won'tD.may not
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A解析考查考生对题干中对话含义和情景的理解和对几个情态动词用法的掌握情况。既然“我确信他(Ann's husband)不戴眼镜”，那么这个人(戴着眼镜)一定不是他(Ann's husband)，而四个选项中只有can't可以用来表达“一定不是”这一概念。