The younger policeman was leaning ______ the wall with his arms folded when he heard someone for help.
_____ as the most excellent student in her university, as most classmates had expected, made her parents very happy.
At no time does the salesgirl get up late in the morning, for she is always too busy _____ a good rest.
It was _____ computer games that cost the boy a lot of time that he ought to have spent on his lessons.
_____ he’s only been learning English for a year, he speaks it very well.
--- I hear Warren _____ in a middle school. --- What? I can’t imagine him _____ as a teacher.