核心词汇
1．Not all of them were successful in e______ from prisons.
2．He was given a r____________ of $1,000 for catching the criminal.
3．The happy s____________ of children playing in the garden vanishes，and it is quiet again.
4．Did you see the cat s____________the mouse?
5．They ___________(哀痛) for their children,
killed in the war.
