All the students to inform their parents the mid-term exam results.A. require; ofB. are

问题补充：

All the students to inform their parents the mid-term exam results.

A. require; of

B. are required; of

C. require; about

D. are required; on

答案：

A. require; of

(答案→)B. are required; of

C. require; about

D. are required; on

解析：考查动词固定搭配；固定搭配require sb to do sth要求某人做某事；inform sb of sth通知某人某事；本题是一个被动语态的形式；句意：所有的学生都被要求把期中考试的成绩通知自己的价家长。故B正确。