As far as I am concerned, education is about learning and the more you learn, _____.
I think that this meal was well worth ________ was charged for it.
—The experiment is of particular importance. —I see. We will carry on with it ________ we can get enough money.
When people move to another country, they often try ________ the customs of their native land.
Although punctual himself, the professor was quite used ________ late for his lecture.
Apples are usually sold by ________ weight and eggs are sometimes sold by ________ dozen.