Do not litter in your daily life.
在你的日常生活中，不要随意扔垃圾。
Do not litter. Throw your rubbish into the refuse bin.
把垃圾放在垃圾桶里并不难。
没人看见时，你乱扔垃圾吗？
I can not litter, I can tell my friends not to do it.
我不会乱丢垃圾，我能告诉我的朋友也不要那样做。
请勿乱扔垃圾。
Do you clear up the litter which is not scattered by you?
你会清理别人乱扔的垃圾吗？
Do you clear up the litter which is not scattered by you?
你会清理别人乱扔的垃圾吗？
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