英语翻译,急！！！！！

1 我们正在边说边笑,这时老师近来了,问什么事这么高兴(excitement)
We were talking and laughing while our teacher came and asked us what was the excitement about.
2 如果我是百万富翁,我会环游世界(虚拟语气）
If I were a millionaire, I would go traveling around the world.
3 我们鼓励学生参加课外活动（participate in)
We encourage students to participate in after-class activeties
4 当他还小的时候,他立志当一名医生(have the ambition to do)
When he was only a kid, he had the ambition to become a doctor.
5 你不知道当他拒绝我时,我是多么失望(have no idea)
You have no idea how disappionted I was when he refused me.

1.We were talking and laughing when the teacher came in and asked what was all the excitement about.

2. If I were a millionair, I would go around the world.

3. We encourage primary school students to participate in after-class activities.

4. When he was very young, he had the ambition to become a doctor.

5. You have no idea how disappointed I was when he turned me down.