一、根据首字母或汉语提示完成下列句中所缺的单词。
1. While Mary was working __________ （在国外），she missed her family very much.
2. I think we are good friends______________（永远），wherever we live.
3. Believing in yourself is the first step on the road to ______________（成功）.
4. Sorry,l forget to___________ （介绍） her to you.This is my friend,Emma.
5. He walked ____________ （朝，向） the end of the road.
