Thanks Weizhe. The questions are already in my textbook, so I had to fix my answers a little. Thankyou so much for your help.

I'm sorry that I missed another small error here, in the answer "对，我的汉语老师是中国人". You can just omit the "对，", as the question is "Which country is your Chinese teacher from?", not "Is your teacher from China?". So it is better in grammar to remove the "Yes,".

There's another small mistake in the last question, "你的中国朋友是谁", I assumed you were trying to say "Who are your Chinese friends?", if that is what you mean, probably "你的中国朋友有谁" or "你有哪些中国朋友" would be better. Because "你的中国朋友是谁" is a very specific question to ask you "Who is the friend from China" (direct translation, just make it easier to understand the hint of this Chinese sentence), and your friends might be a lot of people, not just particular one.