10 oraciones afirmatibas con presente perfecto since and for?

1 i have lived in london for six months

2 i have dance since i was small

3 she has had a day off for a long time

4 i have had a lot of condition since i start to run

5 they have improve in attitude since the headmaster

6 wars have happened for centuries

7 i have had only one holiday, and it was for a long time

8 i have eaten a lot for these week

9 he has gone since i was a kid

10 they have done a lot of homework since the elementary school

espero que te sirva : ).