air

我喜欢新鲜空气。

I like fresh ___air.

我打开窗户让房间透透气。

I opened the window to ___air the room.

我每周都把被子拿到阳台上去晾晒。

I take the quilt to the balcony every week to ___air it.

山里的空气很干净。

The ___air in the mountains is very clean.