To put more than one tori in your scene, you have two solutions :
- you can select all the elements of the tori, take the move tool (shortcut : W), hold shift, then drag and drop on a axe. It will clone selected elements.
- you can also do Files >> Merge... >> select the tori file. It will open a window where you can see all the elements in your files. On the right, you can choose showed category (List Types). On the left, you can select elements to merge.
For the tori, just select "Geometry" category, and then, select all the elements. Click on merge.
It will ask you what have it to do with same named elements. You can rename then one by one, or auto-rename then.
In last part, it will ask you what have it to do with same named materials. Select "Use scene material" for all elements in order to use you scene material.
If you have other questions, ask them here ! ^^