In recent years, laws have been passed to stop wild animals from _______.
--- Look at these black clouds. It _______ soon. --- Sure. If only we _______ out.
One can fail at times, but _______ makes a difference is one’s attitude towards life.
He tried his best to solve the problem, _______ difficult it was.
With the World Cup at hand, _______ has been a heated discussion over which country the championship will go to.
---Besides being bright, he has always been working hard.--- No wonder he _______ in almost all subjects.