Bob!Is this your dictionary?No,it isn't.Ask Sally.She is loo

Bob!Is this your dictionary?No,it isn't.Ask Sally.She is loo Is Bob your brother?A.no,it isn't.B.no,he isn't.C.no,she isn Is this your English dictionary? No,this isn't. Is this your notebook?No,it isn't.ask Bill.He is 1.Is your bag? No,it isn't ( )bag. 2.It is Bob's.It is ( ). Is this your living room?（） A.No,she isn't.B.yes,it is San,is this your dictionary?--NO,it isn't____.It is ___. 找出错的 Is this your English dictionary?No,this isn't. Is the girl's name Sally?回答：A 、No,she isn’t.B、No,it isn’t. — Is this your computer game — No,it isn't.可不可以用No,this isn' -Isn't this your hangbag -Yes,it is./No,it isn't.这句话怎么翻译? Is this your pen ? 答案是 Yes , it is.为什么No,it isn't.不对?谢谢