Necesito ayuda con estos ejercicios

11. Janet and Daniel...............................................................(be) married for nine years.
12. Who ..............................................................................( invent) the telephone ?
13. Jo got married when she ...................................................(be) 23.
14. I ............................................................(know) Ann and Lesley since we were at school..
15. ................................................................(I/not/watch) TV very much.
16. The children are in the living room. They .........................................(watch) TV.
17. We ................................................(not/be) hungry, so we didn’t stay for lunch.
18. Betty ......................................................(have) the same job for 15 years.
19. I .....................................................................(never/ride) a horse in my life.
20. We .....................................................(go) to the cinema yesterday.

Son Past Simple Present Simple Past Continuous Present Continuous y Present Perfect