China isn't the country _________ she used to be 50 years ago.
___ it rain tomorrow, we would have to cancel the football match.
-Sunday is a public holiday, ___ children should get close to nature. -But most of them have several lessons to attend.
I have finished a large part of the novel written by Dickens, the rest of which ___ very difficult.
___ with the increasing unemployment, many people went on strike in most of the European countries.
-Mr. Harry, we want to hear what you think about the reform being carried out in our school. -OK, I ___ to that.