英语高手来啊~~帮忙翻译几个句子

1can you tell me where you are from?
2which path we shall choose is a problem
3the reason why he goes to beijing is very clear
4their team is likely to go ahead of us
5which kind of course to choose is not important,but you need to find an excellent professor

Please could you tell me where are you from?
The question is which path should we choose?
He is aware of the reason to go to Beijing.
Their team may come ahead of us.
It is not important to choose which course,but to find a excellent professor.