yes.this copybook is fof you.中文是什么?

yes.this copybook is fof you.中文是什么? Is this a book? Yes,this is. Mr Green:Good morning ,Liu tao ,( )I ( )a(　）at　your　　copybook?LiuTao：ok I‘m sorry.I ( )(　　）it．（　　　）my　copybook?Mr Green：is　this　your　　copybook?LiuTao：No,it　　isn＇t．It＇s　　blue　．　It＇s Is this Jim?怎么回答yes,he is;Yes,it is.;Yes,this is. Is this gutar your Yes,it is( ) is this( )Japanese pen?yes,it is 介词there are lats of peaches___the tree.there is a kite_____the tree.this copybook is____youis this train____nanjing?your key is the bookmy school is_____the station.the bus is____the theatre.there is a bottle_____juice.who's the woman____long hai Is this your ring?-Yes,this is.哪里错了? Is this a ruler.---Yes,this is.（改错） Is this your ruler?Yes._________. is this ruler your?yes .找出错误 is this your desk ------yes,it i______ Is this --------computer game?Yes,_____is_________computer game Is this your pen?Yes,___(thank). Is this ball your?Yes,it's() Is this you pencil 为什么不能回答 yes,this is.而是要用Yes,it is. is this your pen? 为什么答案上面是 yes this is 怎么不用yes it is ... Is this your handbag?回答YES,it is 不应该是 yes,is this 吗?