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。