it is a big ball.改为否定句

it is a big ball.改为否定句 There is a ball on it.能否改为It's a ball on it. We have a ping-pong ball.改为否句. Is there a big tree behind the house?(改为否定式的陈述句） It is a big map改为一般疑问句 How big a box it is!改为同义句 把It is a big fish 改为感叹句 It is a big house.（改为感叹句） It is a big library.（改为感叹句） it is a big It is a big It is a big 读句子写出单词 1 It is a red big ball in the sky ,It's very hot ( ) The earth is like a big round ball we live. It is such a big room that it can hold 200 people.(改为同义句) Is it a big p_____?Is it a big p_____? It's a big room改为感叹句 It is not a big city or a small city改为同义句It is not a big city （ ）（ ） a small city填两个单词