my pencil case is green 改成一般疑问句

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 pen is in my pencil case.(改为一般疑问句) 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 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? my eraser is in the pencil case改为疑问句 This is my new pencil case 改为一般疑问句 my pencil case is green 改成一般疑问句 My pen is in pencil case.哪里错了? My pen is in pencil case.中有处错误请改正