is that pencil case?这句话哪里错了

is that pencil case 怎么改? That is a pencil case对a pencil case画线提问 the pencil case is( ). is,too,that,pencil,my,and) (is,case,yellow,this,a,pencil(is,too,that,pencil,my,and) (is,case,yellow,this,a,pencil)连词成句 翻译：What is that in your pencil case? 改错改错Is that a pencil case?Yes,it's. is that pencil case?这句话哪里错了 That is a pencil case.(改为否定句) That is my pencil case（改为一般疑问句） that is her pencil case改为一般疑问句 Is that your pencil case?做肯定回答 Is that her pencil case?（做否定回答） my pencil is ____ my pencil case what ( )is your pencil case? This is his pencil case. that is my a pencil case 哪里错了四个部分 一个是that,一个是is 一个是my a,一个是pencil case 用not、this、her、is、case、pencil一句话再用pen、that、his、is is,pencil,that,the,a,in,lost and found,case连词成句