--- 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.
—Excuse me, does Mr. Chen live here? —He ______ be here, but he has moved to Nanjing.
The roller coaster there moved _______ high speed.
_______Smiths are going to Sunshine Town to visit their friends this evening.
— Would you like to Nanjing with us? — Yes, .
— How many members does your club have? — There are members in my club.