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There comes a time the old must give way to the new, and it is not possible to preserve everything from our past as we move towards the future.(用适当的关系词填空)
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Water from the dam would likely damage a number of temples and destroy cultural relics were an important part of Egypt's cultural heritage.(用适当的关系词填空)
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Temples and other cultural sites were take down piece by piece, and then moved and put back together again in a place they were safe from the water.(用适当的关系词填空)