Don’t kill your precious time chatting online all day long. It’s impossible for the lost time ,you know.
Ten minutes ______an hours when one is waiting for a phone call.
The laboratory was_______ until three o’clock that afternoon and I waited for four hours.
------The house cost me nearly 300,000 yuan. ------ My God! Is such a flat worth _______ much?
These days he has made _____ in his studies by working hard.
When he awoke, he found himself ______ in the hospital and ______ by an old woman.