—I wonder where Peter is.He said he’d be here for lunch.—Don’t worry！He________be caught in the rush hour.

—Is John coming by train?—He should, but he     not. He likes driving his car, but I’m not quite sure.

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

 Whether dying patients      be helped to end their lives is a tough moral question.

— May I smoke here?— No, you ______ . This is a no-smoking room.