We now live in a world where labor is __________ compared to capital which is very rare.
Some people fear that ________ air pollution may bring about changes in _______ weather around the world.
I was _______ when I heard the _______ news!
The picture on the wall is painted by my nephew.
It is no good ______ him. He doesn’t help himself.
Can you ______ your sister from that group of girls?