1. Sarah, have you seen Jack?
Oh sorry, he just left.
2. I have just finished my biology project.
About time! You have been working on it for weeks!
3. Have you been living here long?
No, I moved here six months ago.
4. Is that girl new? I haven't seen her before.
No, I think she has been working here for a while.
5. Hi Susan! Did you enjoy your holidays?
Yes, I had a great time!
