______ I see your ID card, sir? We have to check your information.

What were you doing at this time last night? —I .a film with my friends.

Do you ______ my smoking here?—Of course not.

The man in a black suit _______ be our youth worker.— I’m sure it _______ be him. I saw him in the laboratory building some minutes ago.

This book must belong to because it has my name on its front page.