—Professor Smith, I’d like to take a gap year to Africa to serve in a global anti-Aids campaign.—Good idea, ______ you can afford the time.
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 _____.