Can I say,<br/><br/>(a) The<u> king and queen </u>are sitting on the thrones.<br/><br/>(b) The <u>King and (the) Quee</u>n are sitting <u>on</u> the thrones.<br/><br/>(c) T<u>he king and the queen</u> are sitting <u>at </u>the thrones.