1.look at the pairs of sentences and decide which is correct.

a) He has been interested in football since he was 6 years old.
b) He has been interested in football for 6 years old.

2.
a) We have had the same hobby since years.
b) We have had the same hobby for years.

3.
a) I have already decided what to do.
b) I have decided what to do yet.

4.
a) Did you have taken up boxing?
b) Have you taken up boxing?
Read the text below and decide which answer (ab or c) best fits