_____ concern about food safety seems to be ______ subject that is being discussed all over the world.
The parents can’t explain _______ makes their children so fascinated with their teacher’s lessons.
He is, how shall I _________, not exactly fat but rather well-built.
When the policeman stopped us, we all looked questioningly at him, ________.
Tom, clean up the broken glass _________ someone walks on it.
For the past year, he ______ a flat with others and trying to save money to open his own business.