Its a long time since we last went to the cinema

11.Its a long time since we last went to the cinema.
-> We have..
12.The last time I saw Rose was three years ago.
-> I last..
13.I started working here in 2000.
-> I have.
14.I came to live here ten years ago.
-> I have..
15.He started working as an engineer 5 years ago.
-> He has.