学生们根据他们的语言水平被分到不同的班级。

Students are placed into different classes ___according ___to their language level.

经理根据每位团队成员的专长分配了任务。

The manager assigned tasks ___according ___to each team member's expertise.

必须严格按照官方指导方针来执行这些规定。

The rules must be applied strictly ___according ___to the official guidelines.