He started to learn English in 1990 and in the years ________ he kept on using it in his work.
Out of the crowded bus______, who was dressed in a black suit and waved to a woman..
You can either have the double room or the family room,________ you want.
Last month, American scientists started working on _____ project aimed at improving _______ ability to predict earthquake.
-Does Bill do his new job well?-_______ his old job. I’m afraid there’s no hope for him.
. It’s impossible for a person______ a sense of responsibility to succeed.