This is my friend . 复数句 Those are ancient buildings .单数句 Are those fiowers Lily's? 否定句在线等,快一点

this is my friend This is my friend,John. this boy is my friend this is my friend jane Is,new,this,my,friend(.) This is my friend This ( )( )my friend(改为否定句) This is mine friend or This is my friend why? this is my my friend(变复数) This is my friend.She is quiet This is my friend.These are my friend. This is my friend 改为复数形式 This is my friend是什么意思快 This g____ is my friend,AMy, This litter is ( )my pen friend Tony this is my friend改为疑问句 this is my friend.(改为否定句) This is my friend Lucy.She_____in Londou this book is my friend's对吗