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.