1. Tom is so anxious that he can’t __________(专注于) on his teacher’s lessons.
2. With his hard work for years, he __________ (获得) success at last.
3. In sport what really __________ (重要) is not the winning but the playing.
4. The meeting is so boring, most of which is __________ (无用的).
5. You must use your time __________ (适当地) before the final exam comes.
