3 Complete the exchanges with might, could, needn't, ought to, don't have to. 1 A: You … … sign Joe's birthday card. B: OK. I'll do it right after the meeting is over. 2 A: You … … have typed the report. Sheila had already done it. B: I wish you'd told me! 3 A: Why isn't Chloe in the office yet? B: She … 4 A: You … … have missed the bus. work overtime this weekend. B: That's a relief! 5 A: Bill's a great photographer, isn't he? B: Yes, he … … use a camera when he was only five.​