The answer to 12 is C. And the answer to 13 is A i think.
1.The Eiffel Tower is made by iron.
2.It is most beautiful and vibrant at night.
3.Different colored lights fill it at night.
4.It is the tallest structure in Paris.
5.It is unique during it's construction.
6.A prized structure of Paris.
7.Named as the Iron Lady.
8.An old structure.
9.One of the beloved tourist attraction.
10.A modern structure
It would be the conclusion.