按人教七年级上册英语第三单元编写单元对话 急

A:Hello,Bob.B:Hi,Alice.A;Is this your sister?B No, she isnt.A:Here is my family photo. B:It's looks nice. A:Thanks. BIs this your mother? A:Yes,it is. B:Who's your father? A:That is my father.Those are my brothers. B:oh,thy looks lovely. A:This is my cousin.Do your like my cousin B;Yes,i do ABye. B:Bye.

AHi,Anna,Are these your books? B:Yes,it is. A:Are those Bob's pens? B:Yes,thy are. A:And,is this Gina's ruler? B:sorry,i don't know. A;is this your eraser? B:No,it isn't. The blue eraser is mine. AThank you for your help.B:You're welcome