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1£®They provide both shelter and food ________ animals and insects£®
2£®People ________ Shanghai speak English well£®
3£®Oil and coal come ________ the plants and animals that died millions of years ago£®
4£®Birds ________ their nests in trees£®
5£®We must stop ________ down the forests£®
6£®People in poor countries burn wood ________ fuel£®
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