From past classes, we can bring knowledge to be used in everyday life, in education, in order to study a foreign language and can be used to teach children in the future.
Class, we can put that knowledge to use in everyday life, used in the study, to research a foreign language. And can be used to teach children in the future.
The past, we can use the knowledge from the class used in everyday life, in the study, used to study a foreign language? And can be used to teach children in the future.