Question

1Food safety is important. Rules ______ to stop people from food pollution.

A. must make        B. must be made C. can’t make      D. can’t be made

 

Answer 1

【答案】

C

【解析】被动语态的用法。 本句句意：食品安全很重要，必须制定制度来阻止人们遭受食品污染；根据句意应该含情态动词must的被动语态，即must be done。