помогите пожалуйста!!!!Tag questions(positive +-)

1.Bingham found amazing things in Machu Picchu (...)?
2.He found stone buildings there, (...)?
3.Hiram Bingham was a scientist,(....)?
4.He isnt American,(...)?
5.Farmers constructed terraced fields around the city(..?
6.All the buildings were not strong(...)?
7.Even earthquakes didn't destroy them,(..... ).?
8.The Incas were smart people(.....)?
9.They were not only great builders and astronomers(....)?
10.Machi Picchu was a great city(....)?
11.Hundreds of people lived there(....)?

1.Bingham found amazing things in Machu Picchu, didn`t he?  

2.He found stone buildings there, didn`t he?  

3.Hiram Bingham was a scientist, wasn`t he?  

4.He isn’t American, is he?  

5.Farmers constructed terraced fields around the city, didn`t they?

6.All the buildings were not strong, were they?  

7.Even earthquakes didn't destroy them, did they?  

8.The Incas were smart people, weren`t they?  

9.They were not only great builders and astronomers, were they?

10.Machi Picchu was a great city, wasn`t it?  

11.Hundreds of people lived there, didn`t they?