12.You (not/do) haven't done………….yor project yet, I suppose.
13. I have just (see)…seen ……. Andrew and he says he …has …..already (do)…done……. about half of the plan.
14. I ……have…..just (decide)…decided…… to start working next week.
15. He (be)…has been………. at his computer for seven hours.
16.She (not/have) …hasn't had…………any fun a long time.
17.My father (not/ play)…hasn't played…….. any sport since last year.
18.I’d better have a shower. I (not/have)…haven't had……. one since Thursday.
19.I don’t live with my family now and we (not/see)…haven't seen………. each other for five years.
20.I…have… just (realize)…realized………... that there are only four weeks to the end of term.
21.The train drivers (go)…have gone…… on strike and they stopped working at twelve o’clock.
22. How long…have you….. (you/know)…known……. each other?