2. We are ____ the train.

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3. Why are you not sleeping ____ your bed?

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4. There are clothes ___ my bed.

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in

5. We are going to take a walk ____ the forest.

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in

6. I am working _____ the kitchen.

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on

7. My mother put your mail ____ your room.

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at

8. Can you put everything ____ the car?

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at