I. Complete the sentences with the Present perfect.
1. The bill isn’t right. They (make)………….. a mistake.
2. Don’t you want to see this programme? It …………. (start).
3. I (turn)……….... the heating on. It’ll soon get warm in here.
4. …….....they (pay)…...….. money for your mother yet?
5. Someone (take)………………. my bicycle.
6. Wait for few minutes, please! I (finish)……………. my dinner.
7. ………you ever (eat)………….. Sushi?
8. She (not/come)…………… here for a long time.
9. I (work)………….. here for three years.
10. ………… you ever …………..(be) in New York?
11. You (not/do) ………….yor project yet, I suppose.
12. I (just/ see)………. Andrew and he says he ……..already (do)………. about half of the plan.
13. I ………..just (decide)……… to start working next week.
14. He (be)…………. at his computer for seven hours.
15. She (not/have) ……………any fun a long time.