题目内容

Food safety is important. Rules      to stop people from food pollution.
A、must make
B、must be made
C、can’t be made
B

试题分析：make rules to stop制定规章制度来阻止…；rules提前，句子要用被动形式，must表必须，情态动词的被动形式must be done;句意：食品安全是很重要的。一些规章制度必须被采取来使人们远离食品污染。故选B.
点评：被动是中考中必考的语法点。解答好此类被动语态的题目，首先需要对句意有充分的理解，其次注意被动语态的基本形式。对于情态动词的被动形式为“情态动词+be+done”.
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