问题描述：
改为复数句（题在下面）
1.There is a bridge over the river.
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2.Is there a harbour in your city?
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3.There was a factory in our town.
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1.There is a bridge over the river.
_____________________________________
2.Is there a harbour in your city?
_________________________________
3.There was a factory in our town.
___________________________________
问题解答：
我来补答展开全文阅读