------ Why does the lake smell terrible? ------ Because large quantities of water _________.
--- How did you find your visit to Shangri-La? ---I thoroughly enjoyed it. It was _______ than I expected.
--- 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.