你能根据上下文,把这些对话补充完整吗?1.A∶Is there a bridge over the

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1.river, there is
2.apples, there are
3. buildings
4.Is forest, No
======以下答案可供参考======
供参考答案1:
1.river, there is
2.apples, there are
3. buildings
4.Is city, No