Раскрыть скобки ( 5в-(2-3в))+7в=

Choose the correct variant and put it down.

1. Concrete as a building material possesses {only advantages, both advantages and disadvantages).

1. 
   
2. Concrete is considered to be a {universally used material, rarely used material) .
3. 
   
4. One of the qualities of concrete is that (it does not possess tensile strength, possesses tensile strength) .
5. 
   
6. Ferro-concrete is {rather popular, not popular) in the modern construction.
7. 
   
8. Gravel is classified as {coarse, fine) aggregate.
9. 
   
10. One of the good qualities of concrete is its {high, low) cost.
11. 
    
12. Concrete (decays and bums, does not decay and burn) .