1) Nick:Bob!What are you doing in the kitchen?
Bob: I'm cooking right now.
Nick:That sounds nice.How long have you been cooking it?
Bob: I have been cooking for hole day and I'm pretty tired.
2) Nick:Jane,I need your help.
Jane:Excuse me,I am really busy now. I'm doing mt homework. Ask Sam
Bob:Sam isn't in.I asked him to do shopping.
Nick:Is he going to come soon?How long has he been in the shopping centre? ( не уверена по поводу времени, подумайте сами)
Bob:Well, he has just gone.
Jane:OK.I've done it already and i am going to help you,Nick.