根据下列句子及所给单词的首字母，写出各单词的完全形式。
1. I'm w______ that I'll fail the exam.
2. Only then will I have a chance to a______ my dream.
3. All the students must c______ their attention on their work.
4. He worked as a v______ during the Olympic Games.
5. Mr Kennard is a teacher of much e______. He has taught in several countries.
6. —What's the result?
—My mother will make the ______ (决定).
7. If you work hard, you can ______ (通过) the test.
8. Students need ______(严格的) rules.
9. At ______ (目前) they're too short.
10. But they are always talking about what will happen if I don't ______ (成功).
