按要求完成下列句子。
1. There are a lot of pianos on the island. (变成否定句)．
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2. There is a bird in the tree.（变成复数句子）
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3. There are some apples in your bag. (改为一般疑问句)
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4. There isn't any bread in the fridge. (译成汉语)
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5. on, are, the, houses, of, There, island, lots . (连词成句)
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