保持察旦郑句意不变，完成下句
Don't leave rubbish.
You 败颂____ _____ leave rubbish.
You 【can】【not】迟伏leave rubbish.
You must not leave rubbish.
第一句是祈使轮指兆句，带有命令腊租的逗灶意思，所以要用must
You must____ not__ leave rubbish.
填should not
should not 和must not 都可 后者语气更强烈
此处应该填写
should not
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