what a( )this pencil?

what a( )this pencil? What is this?----This is a pencil sharpener改错 What`s this?回答是This is a chair.还是It`s a pencil. this is a pencil 改为特殊疑问句是不是what is this? 能详细点最好:,And what`s this?This is a pencil sharpener. What's this in English?A.It is a pencil sharpener B.It is a --It's a ball pen,( --It's a pencil.A.what is this B.and wha What is on the desk?-------a pencil case.A.it is B.this is C what a[ ] this pencil is it yours .No,it isnot mine.[ ]里添一个以 一道初一英语习题.is__2__your pencil?A.it B.this C.than D.what该填那个? It"s my pencil case.What"s in it?Look,this is a pen. Look at this. It’s a pencil box. It’s orange. What’s in it?