––I didn’t go to work yesterday because my car broke down.––You _____ mine. I wasn’t using it then.

 -Will the book I ordered arrive in time? -lt _______, if there is no traffic jam.

—Is that boy Alan?—No, it ______ be him. He left for Beijing yesterday.

You      remind him to keep things neat and tidy, because he is well organized. 

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