1. He is a_______ (好奇的) boy who is always asking questions.
2. My first painting sold for ￡25, a small_______ (财富) then for an art student.
3. We want to _______ (保存) the character of the town while improving the facilities.
4. He put a grape into his mouth and _______ (吞咽) it whole.
5. Students who fail to meet the _______ (要求) of the course will fail.
