The boy is sorry he is not a doctor
The boy wishes......he was a doctor
He hasn't seen her for twelve years
He last........saw her twelve years ago
When did you start to listen to pop music?
How long.have you listened to pop music?
We haven't gone to the concert for over a year
The last time..we went to the concert was over a year
We last saw our grandfather two years ago
We haven't.. seen our grandfather for two years
We haven't eaten seafood before
This is the first time... we have eaten seafood
They have learnt English for ten years now
They started...........learning English ten years ago
She started give up smoking last year
She hasn't..... given up smoking since last year
Tom has worked in that factory since 1990
Tom began working in that factory in 1990