My pencil case is in the bag.对画线部分（in the bag ）提问.

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 is ____ my pencil case My pen is in my pencil case.(改为一般疑问句) my pen is in pencil case 哪里错了? 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 My pen is in pencil case.哪里错了? My pen is in pencil case.中有处错误请改正 There is n______ but a rencil in my pencil case. No,（） pencil is in the pencil case.A I B my C his D me Where( )the erasers?( )in my pencil case blue is pencil case my 组成一句话 Is () a pencil-case in the bag? my pencil is in the pencil case.改为一般疑问句.The baseball is under the table改为否定句. two pencils in my pencil-case a piano in themusic room There is和there are My pencil case is in the bag.对画线部分（in the bag ）提问. pencil,the,is,the,in,pencil case.组成一句话