19.- Complete with "since" or "for"
a) We have been friends since we were in elementary school
b) I have lived in this town for six years
c) Almost all the boys play football since they begin walking.
d) Mr. Williams has been the couch for three years.
e) My sister has been taken ballet class since she was ten years old.
f) My grandparents have been married for fifty years.
Suerte con tu tarea.
- Nat
