my pencil case is on the desk .There is an eiaser in it.the football is under the chair

my pencil is ____ my pencil case blue is pencil case my 组成一句话 My pen is in my pencil case.(对in my pencil case提问) There is a pen in my pencil case改为I () a pen in my pencil case my pencil-case my pencil case is on the desk .There is an eiaser in it.the football is under the chair My eraser is in the pencil case. 对in the pencil case.进行提问 tommmys book is on the chair.改为一My eraser is in the pencil case. 对in the pencil case.进行提问tommmys book is on the chair.改为一般疑问句i know his name改为否 My eraser is in the pencil case.对in the pencil case.进行提问 tommmys book is on the chair.改为一My eraser is in the pencil case.对in the pencil case.进行提问tommmys book is on the chair.改为一般疑问句i know his name改为否定 My pen is in my pencil case.(改为一般疑问句) the pencil case is( ). he is on my case 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 阅读短文,完成练习（英语）Look at that.It's my pencil-case.It's a blue pencil-case.What's in it?Let's look.This is my eraser.It's green.This is my peicil.It's green,too.This is my pen.It's white.My pencil-case is big and nice.It is on my d This is my pencil case改为复数形式 That is my pencil case（改为一般疑问句） my pen is in pencil case 哪里错了? Is this my pencil case?回答否定回答 My pen is in the pencil case改为一般疑问句?