—I apologize for not being able to join you for dinner.—________. We’ll get together later.
A qualified doctor has to constantly update his knowledge in order to maintain his professional _____.
We all consider _____ significant that we should cancel the order immediately.
_____, everyone present was amused by his adventure story in Africa.
_____ they are fit, I see no reason why they shouldn't go on playing basketball for another four or five years.
It was not until dark ______ he found ______ he thought was the correct way to solve the problem.