Look at ______ book on the desk . Is it ______ useful one ?—Yes, it is . In the book there is much advice on how to learn math well.

Are Mr. and Mrs. Black at home? — No. ________ of them are at work.

Alice, is this you dictionary?— Oh，no, it’s not _______. Ask Tom. He is looking for ____.

We all know that Mary __Chinese better than Maria. [ ]

_______ his father, David Beckham _______ playing football.[ ]