Many people do not realize the importance of health _____ they have fallen ill.
- Shall we climb Nanshan this weekend? - Good idea! It’s not high. It’s about _____ high.
It’s widely known that you won’t achieve success _____ you work hard.
He thinks himself somebody, but we think him _____.
The boy failed the exam because he _____ a lot of time playing the computer games.
The shy girl prefers _____ in the KTV to _____ on the stage.