题目内容：

peter is the tallest----- the three boys.介词是用in,of 还是among?

优质解答

是of 或者 among .
1 记住以下句子,你就ok了
Peter is the tallest of / among all the 17 boys in the class.
2 语法分析：
Peter is the tallest of / among（同类之间的比较） all the 17 boys in （强调地点,范围和时间）the class.