__________ in central Shanxi Province, Pingyao is famous for its ancient city walls and its architecture which date from the Ming Dynasty.
Evidence obtained from observation and experiment is often used to _____ a scientific theory.
. Jack is good, kind, hard-working and intelligent. _____, I can't speak too highly of him.
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.