If the drought in Southwest China, the crops will be ruined. Worse still, both people and animals will be threatened with a lack of drinking water.
Evidence obtained from observation and experiment is often used to _____ a scientific theory.
Because of the strong sun Mrs. William’s new dining room curtains _____ from dark blue to gray within a year.
. I asked the tailor to make a small _____ to my trousers because they were too long.
It was necessary to _____ the factory building as the company was doing more and more business.
. On turning the corner, we saw the road _____ steeply.