The driver tried everything he could think of, but the car just ______ not move.

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

John, look at the time. ____ you play the piano at such a late hour?

 ---The book _____ be Tom’s.---No, it _____ be his. There’s a name on the book. It’s Jim’s.

---Did Daniel take my football away?---No, I think it _____ be him, for he doesn’t play football at all.