有读者问如何做这道选择题：
(1)_____ of the students did everything as the teacher had told.
A. Each B. Every C. Everyone
应选 A。B 错是由于 every 相当于一形容词，不可用作主语。C 错是由于 everyone不可接 of the students。 如将 everyone 写作 every one， 就可以入选了。关于“each + of...”结构，再举一二例如下：
(2)Each of them came at a different time.
(3)Each of us has his opinion. （相当于we each have our opinions）
