Question

Answer 1

seen his brother for nearly 20 years
since you learnt to drive?
gone swimming since we were in Spain
since I last tidied this room
looked for a flat for 2 months and we are still looking 
been to a night club before
they have heard such a thing
his authority has been challenged
2 years since she left university
never known a more warm-hearted person than my mother
over a year since I was able to see them
rained since 2 o'clock

Answer 2

49. My father hasn't seen his brother for nearly 20 years.

50. How long is it since you learnt to drive ?

51.I haven't been swimming since we were in Spain.