We 'd better keep the doors and windows open/opening/opened/to open because it'stoo hot today.

We 'd better keep the doors and windows open/opening/opened/to open because it'stoo hot today.
We 'd better keep the doors and windows open/opening/opened/to open because it'stoo hot today.

We 'd better keep the doors and windows open/opening/opened/to open because it'stoo hot today.
直接填open
open 在这里是形容词,表示一种开门的状态