题目内容

Food safety is important. Rules _____ to stop people from food pollution.
A．must makeB．must be madeC．mustn’t makeD．mustn’t be made
B

试题分析：句意：食品安全很重要。必须制定措施保护人们远离食品污染。结合语境可知本句主语是动作对象，故用被动语态，选B。
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