— the team finished most of their research work?—Yes, but the rest rather difficult.
in a white uniform, he looks more like a cook than a doctor.
His sister left home in 1998,and_______ since .
After two hours of walking, they came to the camp site, ______ .
—______ that he managed to get the book?— Oh, his sister helped him.
Tom has been out of work for two years, so he has difficulty______.