最清洁的燃料是（　　）

— I am going to Millie's birthday party this evening, Mum. 

—       , and remember to come back before 10.00 p.m.

根据中文提示，写出单词，注意单词的正确形式(共10个空格，每个空格1分，满分10分)
1.Who can see the____(美丽)of this picture?
2.Our school basketball team needs your____ (支持)．
3.I ____(相信)our school football team will win the match.
4.I read many____ (英雄)stories．
5.____(幸运)，Millie did not hurt herself in the traffic accident．
6.My little brother has two big____ (微笑)eyes．So everyone likes him very much．
7.Everybody____（欢呼）when the pop star arrived.
8.It's not right to____ （吓唬） the small children.
9.Betty is one of the____(获胜者)of the writing competition．
10.Lucy and Lily kept their secret to____ (他们)．