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

---I think Helen is at home.---No, she    be at home, for she phoned me from the airport just five minutes ago.

Tom’s score on the test is the highest in the class. He _____.

You ___ drink wine before driving, or the police will take your license away.

Mr. Smith has promised that all of us will pass the exam, so it ____ so difficult as you imagine.