This is___,but it's already in use in many parts of the word

This is___,but it's already in use in many parts of the word But people in many parts of the world have to cut many trees The weather is different in different parts of the word.In s European dress has been by people in many parts of the word 1.There is___"s"in the word"so" 英语阅读理解.In most parts of the world．many students help their s 英语翻译.In many parts of the world,a young person’s husband or what's the meaning of this word "burning" in Chinese? There is___"o" in the word "front" I'm looking for this book it's in the list of titles but I c Many,many people use it,not only in English and the U.S.A.,b 是in the word "use" 还是in the word of "use"