29. Studies show that the things that contribute most to a______of happiness cannot be bought.
—I wonder why he has been acting so strangely these days. —Recent pressure at work may his behavior.
It was not rare(稀少) in that people in fifties were going to school for further study.
both his eyes focused on his book, he didn’t notice me enter the room.
—It’s five years since I here. —Where do you work now?
—Why did he say so? —Sorry, I don’t understand he has said means.