—Mary, is this book yours?—No, it isn't. It ____ be Anne's.&nbs

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1. —Mary, is this book yours?
—No, it isn't. It ____ be Anne's. I see her name on it.

A . must B . might C . mustn't D . can't

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四川省广元市苍溪县区2024年九年级英语二模试卷