The Great Wall runs for over 6,000 kilometres_ _________ northern China.
Tom Sawyer is very _______ because he is willing to do things which are difficult or dangerous. A. hard-working B. brave C. polite
The APEC meeting is the main _______ of Beijing now. A. survey B. director C. event
When the right chance _______, she will take it. A. comes along B. pass out C. join in
To be a(n) _______ person means to be well-known among a group of people. A. celebrated B. important C. lucky
Something that is _______ means we need it for a purpose or a reason. A. careful B. humorous C. necessary