__what is it _IT is a box

can you __what is in the box? I think it is a big box It is a _____ box(wood) What is this? It is a box.复数形式 _ ————this?_It is a pencil. W hat is that? a box A There is B it C It is D That I can't __what that object is. it is a box.(改为复数形式）帮忙啊! How big a box it is!改为同义句 It is a large box.(改为复数句） It is a red pencil box.变成复数形式. Is it a pencil-box?改为肯定回答.