_____ important air is to living things!A.howB.what anC.what a D.what

_____ important air is to living things!A.howB.what anC.what a D.what water and air are important _____ us ______ live.A.to,for B.for,to C.to,to D.for,for nowadays ,many buses are _____(air-conditioners air-conditioned) It is important to take indoor air pollution seriously. 英语二选一选择题.Air and water ( ) important.【is；are】 let me have a ().sory please show me anothersweaterCan you play _____ a yoyo?Yao Ming is a famous ______ player.Trees are important _____people.they can _____the air frsh and clean. How important it is _____ (save) water! Tom,_____(do)homework carefully is important _____ important piece of advice it is! air air air Is there _____?A.anything important B.nothing important C.important anythin air opinions They should not receive interviews without authorization or air opinions over important and sensitive issues on news media. There is no life _____ (with) air or water. open the window and _____(air) the room,please. Travelling by air is _____ than by train.(expensive) Air _____ (pollute) is the most serious of all.