What do you do the weekends?A. in B. on C. at
( )Is this your sister? A. No, he isn’t B. Yes, She is.
( )He’s my sister. That’s ______book. A. his B. her
( )_______ is that girl? She is my sister. A. Who B. How
( )This’s my ______ A. father B. mother
( )Look ______this picture.. A. at B. in