把下列句子变成复数句.
问题描述：
把下列句子变成复数句.
1：There is a bridge over the river.
2:Is there a harbor in your city?
3:There was a factory in our town.
4:Was there an orange in bag?
5:Where is an apple in my hand.
答
There are bridges over the river.
Are there harbors in your city?
There were factories in our town.
Were there oranges in the bag?
Where are apples in my hands?