英语句子划分People should avoid staying overnight in the open air

in the open air the air in the open air is very ___ many people like going t in the open air造句 you should open the window to let in the clean air.let in The next day people put up shelters in the open air made wit People in China usually stay ___ the open air __ the night o o ____ out,in the open air I flew in the open air We can get f___ air in the open air. 划分句子成分(let)(the fresh air )(in). on the air 、in the air 、in the open air的区别 keep the door open to let fresh air in.分析句子结构