Air Air is all ___(在…的周围) us.It is around us as we walk and play.From___ ____ we ___ ___(自From ___ ___ we ___ ___(自从我们出生以来 )

Air Air is all ___(在…的周围) us.It is around us as we walk and play.From___ ____ we ___ ___(自From ___ ___ we ___ ___(自从我们出生以来 ) 句型转换 The air today is very clean.The air today is ___ ___ clean. air air air It is the air,that is a_____us all. the air in the open air is very ___ many people like going there 英语连词成句：all ,the ,around,us,air,is Air _____ (pollute) is the most serious of all. The air is what is air There is air c_____. There is air e____. There is( )air-conditioner. The air is c( ) what is air resistance The air is made up of more than 70% of nitrogen（同义句）The air ___ ___ ___ more than 70% of nitogenThe air ___ ___ ___ more than 70% of nitogen(要两种不同的填法) 37.We all know the fact ___ there is no air or water,there no life.a.thatb.wherec.that where选什么,怎么分析的