根据句意及汉语提示完成句子。
1. 初次见日本朋友时你应该说什么?
What _____________ when you meet your Japanese friend?
2. 我怎样才能用正确的方法与美国朋友打招呼?
How can I _____________ my American friend _____________?
3. 老师常常告诉我们要尽量帮助有困难的学生。
The teacher often tells us to help the students _____________.
4. 他没有理由去做那件事。
He has _____________.
5. 很快他便成了学校里的尖子生。
Soon he became _____________ at school.