Question

Do you think students should ______ to wear their own clothes at school ?

1. A.
   allow
2. B.
   are allowed
3. C.
   be allowed

Answer 1

C
本题表示的被动的含义用被动句，结构为be+过去分词，should后跟动词原形不变，故本题的答案是be allowed，故本题选C。