—Thank you very much for giving me a hand when I was in trouble. —Don’t mention it. I only did what anyone else in my place.
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.