环保相关词汇 — 英语填空题
题目
选词填空（每词限用一次）：trees, water, lights, rubbish
We should save ______ by turning off the tap(水龙头) when we brush our teeth. We can plant more ______ to make the air clean. Don't throw ______ on the ground; put it into the bin. Remember to turn off the ______ when we leave the room.