was done with it

Question

The pollution problem here seems to get more and more serious．Something ____with it．（　　）

A. has done

B. must be done

C. is doing

D. was done

Answer 1

答案：B
首先根据语境“这里的污染问题好像越来越严重了，可知必须采取措施来解决”，主语something 是动作do的承受者，确定用被动语态，表达“必须”之意用情态动词must，本题考查含有情态动词的被动语态，其构成是：主语+情态动词+be+动词的过去分词．do的过去分词是done，故答案为：B