She may have missed the train, in _____ case she won't arrive for another hour.
| A．whose | B．that | C．which | D．what |
Evidence obtained from observation and experiment is often used to _____ a scientific theory.
| A．confirm | B．confine | C．conform | D．conceive |
Because of the strong sun Mrs. William’s new dining room curtains _____ from dark blue to gray within a year.
| A．faded | B．fainted | C．paled | D．diminished |
. I asked the tailor to make a small _____ to my trousers because they were too long.
| A．change | B．variation | C．revision | D．alteration |
It was necessary to _____ the factory building as the company was doing more and more business.
| A．extend | B．increase | C．lengthen | D．magnify |
. On turning the corner, we saw the road _____ steeply.
| A．departing | B．decreasing | C．descending | D．depressing |