– Must I stay here with you?-- No, you ______. You may go home, but you _____ go to the net bar(网吧).

— I missed the earliest flight in the morning. It was really a pity. —You _________ to the airport by taxi instead of by bus.

---Is John coming by train?    ---He should, but he ________ not. He likes driving his car.

 — Is Jack on duty today? — It ________ be him. It's his turn tomorrow.

 — Mum, would you please buy me an ipad?— If you can help do the dishes the whole vacation, you ______ have one as a reward.