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(dòng)語(yǔ)態(tài)的用法。 本句句意：食品安全很重要，必須制定制度來(lái)阻止人們?cè)馐苁称肺廴荆桓鶕?jù)句意應(yīng)該含情態(tài)動(dòng)詞must的被動(dòng)語(yǔ)態(tài)，即must be done。