_____________ his homework, the boy was allowed to watch TV.
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.
________ of the truth of the reports, he told his colleagues about it.