Verified answer

1 houses – present simple active

2 began – past simple active

3 is done – present simple passive

4 is growing -- present continuous active

5 has become – present perfect active

6 was founded – past simple passive

7 is covered – present simple passive

8 were brought about – past simple passive  

9 a) believe – present simple active b) will continue – future simple active

10 is getting worse -- present continuous active