As deputy mayor of Shenzhen from 2002 to early 2009, Liang Daoxing took bribes_____ favors.
Having finished the work,_____.
The boy had his leg _____ while ____ football.
He would rather ______ his parents with their housework than _____ out to play games.
_____ carelessly, the boy made mistakes here and there. .
The problem requires ______.