How important It is to limit air and water pollution 句子有错吗

how important it is 还是how important is it How important it is _____ (save) water! 为什么答案是how important it is? How important it is to careful with fire!（改错 How important a thing it is to keep our promise! meeting it is!A.What a important B.What important C.How an important D.What an important remind us how important it is为什么us后面不用of,how important it is是什么短语? we show how important it is to keep learning .为什么important It is how you feel ,how you think ,and what you do that is important.翻译 how important it is to learn English.这个句子中的it is 能省略吗为什么 it is very important ()important information it is!A.What an B.How an C.What D.How how important happiness is!翻译 Knowing how to ask for information politely is important,isn't it?What it's this ---it is expensive or not is an important questionA whether B that C if D how Usually we don't realize how important nature is to us unless it is too late there is doubt that how important it is.句子有错吗? How much you earn is not very important. It is how you earn the money that counts 这题 怎么翻译