Выберите правильную форму глагола.A JOHN: Can you help me with these letters?IRIS: Must we do/ Should we do them now? Can’t they wait until the morning?JOHN: No. I must have posted/ should have posted them this morning, really.IRIS: Oh, all right then.B KEN: Where’s Sally? She must be/ should be here by now.JO: I don’t know what’s happened to her. She must have missed/ should have missed the train.C MARY: Happy birthday. I’ve brought you a present.NEIL: Oh, you needn’t bother/ needn’t have bothered. MARY: That’s OK.NEIL: Well, thanks very much.D PETER: I’m going to Neil’s birthday party this evening. Do you think I must/ ought to take him a present?RAY: Well, you mustn’t /don’t have to, I’m sure he doesn’t expect one. But personally I don’t think you should arrive/ must arrive at a party without anything for your host.E At Neil’s partyNEIL: Why isn’t Andrew here? Is he too busy?PETER: He told me he hadn’t been invited. He’s gone away for the weekend.NEIL: Oh, dear. His invitation must get lost/ must have got lost in the post.