( )Why are you _____ ? A. laugh B. laughing C. sing
—— she your friend?——Yes,she is. A.Am B.Is C.Are
is the girl? A.Who B.What C.Whose
There four people in my family. A.am B.is C.are
Nice to meet . A.you B.your C.yours
This my father. A.is B.are C.a