Choose the best answer. (Em hãy kéo, thả đáp án đúng vào chỗ trống)

Must / mustn't

You … tidy up your room.

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You _______ across the road without looking around.

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I _______ do my homework. My teacher said so.

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mustn't/ don't have to

You …  drive there. You can take the train.

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We _______ eat sweets in the classrooms.

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You _____ pick up flowers in the school garden.

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This is the smoking room at this airport . You ______ smoke in this room.

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I ______ watch TV late at night. My parents say I must go to bed early.