Food safety is important. Rules must ________ stop people from food pollution.
A．be madeB．be made toC．makeD．make to
B

試題分析：句意：食品安全很重要。應該制定相關的法則來組織人們污染食物。Rules和made是被動關系，因此要用被動語態(tài)。made是使讓動詞，變?yōu)楸粍诱Z態(tài)時要還原不定式符號to。故選B。
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