单项选择题
（） Chicago is a beautiful city today, but（）Chicago of the 1920s was a very dirty place.
A. The; the B./;/ C. A; the D./;the
单项选择题 A completely new situation will （） when the examination system comes into existence.
单项选择题 （） cave that George has discovered in his lifetime is near the Alps.
单项选择题 Henry will not be able to attend the meeting tonight because （）
