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By the time Maria finished her report, she ____ working on the computer for over three hours.

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They showed us the pictures of volcanic eruption that they _____.

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Susan was late. By the time she got to school the class _____ already.

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We watched TV after our daughter ____ to bed.

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We ____ that car for ten years before we sold it.

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When the firemen _____, the fire had completely destroyed the back half of the building.

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In the evening, the children told their mom what they _____ at the zoo.