There’s no way of knowing why one man makes an important discovery________another man,also intelligent,fails.
The TV set he _________ works well now.
There are a lot _______ people today than yesterday.
Wang Wei is one of many Chinese students _______ “on the go’.
With the development of science and technology, people’s life _______ in the past few years.
We have moved into a four-room flat so far. Our room is between _____.