1 You should open the wine.

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2 Previous climbers had cut  the ice.

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3 Somebody has cleaned my shoes.

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4 We use this room only on special occasions

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5 You must not hammer nails.

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6  farmers use pigs to find truffles.

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7 Someone switched on a light and opened the door.

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8 Somebody has slashed the picture with a knife.

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9 They are pulling down the old theatre.