Food saftety is important.Ruless___to stop people from food pollution.A.must make B.must be made C.can't make D.can't be made

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Foodsaftetyisimportant.Ruless___tostoppeoplefromfoodpollution.A.mustmakeB.mustbemadeC.can''tmakeD.can

Food saftety is important.Ruless___to stop people from food pollution.A.must make B.must be made C.can't make D.can't be made
Food saftety is important.Ruless___to stop people from food pollution.
A.must make B.must be made C.can't make D.can't be made

Food saftety is important.Ruless___to stop people from food pollution.A.must make B.must be made C.can't make D.can't be made
B
翻译为 必须被制定

正确答案选B
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B rules是被指定的