In the summer of last year, he achieved his ______ of winning a medal in the Beijing Olympic Games.
Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, _________ the number of people infected with the virus is going up sharply.
For most Americans, their 18th birthday the end of one part of their life and beginning of another.
While crossing the mountain area, you’d better carry a stick in case you________by wild animals.
—Alice promised me to come round to keep you company today.—But she ________. I’ve been alone all day.
—Miss Broun is very busy, isn’t she?—So she is. She has________greater responsibilities since she was promoted.