The leaves start off green but turn red later.
树叶起先是绿色，到后来会变红。
Anyone who leaves the room last ought to turn off the lights.
最后离开房间的人应该把灯关上。
Please turn the light off if you were the last one who leaves the classroom.
如果你是最后一个离开教室，请关灯。
Whoever leaves the room last ought to turn off the light.
最后离开教室的人应该把灯关了。
Whoever leaves the classroom last should turn off the light.
不管谁最后离开教室都应把灯关了。
Whoever leaves the classroom last should remember to turn off the light before leaving.
不管是谁最后离开教室，都应该记住走之前关灯。
Whoever leaves the classroom last should remember to turn off the light before leaving.
不管是谁最后离开教室，都应该记住走之前关灯。
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