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题型：单选题题类：模拟题难易度：普通

—He ____be in the classroom, I think.
—No, he_____ be in the classroom. I saw him go home a minute ago.

A、can, may not B、must, may not C、may, can't D、 may, mustn't

举一反三

—Must I dress up as the Monkey King？ —No，you .You can choose whatever you like.

Children sit in the front seat of the car. It's too dangerous.

Be careful with the machines and you ______ touch any of them!

All passengers _____ exit at the next stop. The train will not continue.

—I don't care what people think.

—Well, you _______. You're not alone in the world.

— Look! A book is on the floor. Whose is it?

— It _______________ be Tom's. It has his name on it.

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