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猜一猜,写一写,画一画.1.It is clean when it is black.It is dirty when
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blackboard
chalk
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【what is clean when it black ,and white when it is dirty.
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It is clean when it is black.
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What is black when it`s chean and white when it`s dirty?
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猜一猜,写一写.It has wings.It can fly in the sky.It is very laege.
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