Choose the correct form. a) i have an appointment at the dentist’s at 4.00. would i / may i leave half an hour early? b) john, you’re nearest the window. could you / could i open it please? c) would you mind taking / do you mind if i take this note to the teacher’s room for me? d) those books must be heavy. shall you / shall i carry some of them? e) if i were you, i wouldn’t leave / you shouldn’t leave your bag by the door. f) i don’t think you should spend / why don’t you spend so much time playing computer games. g) do you think i could explain / do you think you could explain what this means? h) i haven’t got time to explain now. let’s ask / why don’t you ask me again tomorrow? i) would you like / do you mind more paper? j) can you / may you let me have your project tomorrow?