We should keep the door___ in order to let the air in (opem)
问题描述:
We should keep the door___ in order to let the air in (opem)
答
We should keep the door (open,形容词,开着的) in order to let the air in.
我们应该让门开着,为了让空气进来.
keep sth +形容词,使某物保持某种状态.