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】被動語態的用法。 本句句意：食品安全很重要，必須制定制度來阻止人們遭受食品污染；根據句意應該含情態動詞must的被動語態，即must be done。