The man in a black suit _______ be our youth worker.—It _______ be him. I saw him in the classroom building some minutes ago.
.—Excuse me, is the book shop far from here?—No, it is just _________ of our college.
He lives on ________ floor in that building.
Are the keys yours?－No, they aren’t _____. I think they’re Jason’s.
_ we left the building that I realized how dangerous the situation had been.