每一个

例句：

1. 1. Every student needs to take a test.
   每个学生都需要参加考试。
2. 2. Every day, I wake up at 6:30 am.
   我每天六点半起床。
3. 3. Every time I go to the store, I buy some milk.
   每次我去商店，我都买些牛奶。