Please check my sentences! - 7 你是哪国人？ 我是中国人。你呢？ 我也是中国人。他们都是哪国人？ 他们都是俄罗斯人！ Is it compulsory here to use "都"? If it is not, please help me to understand when i should use it...

Please, check my sentences! - 4 这是 春天。这是极好的季节。

Please, check my sentences! - 3 我很累。我要休息。 ～～～～～～ 这是我。我很好。

Please, check my sentence! - 2 －这是谁？ －这是我的老师。 －他好吗？ －是，他很好。 －他们都是哪国人？ －他们是俄罗斯人。 Who is this? This is my teacher. Is he fine? Yes, he is fine. Where are they from? They are from Russia (they are Russian).

Please, check my sentences! - 6 我很忙。我要休息。 I am very busy. I want to have a rest.

Please, check my sentence if it has any mistakes! - 6 我爱休息日。 I love weekends! 这是我的车吗？是，恭喜！ Is this my car? Yes, congatulations!

Please, check my sentence if it has any mistakes! - 5 这是他哥哥，弟弟。他们都很好。他爱他们！ These are his brothers. They are fine. He loves them!

Please, check my sentence if it has any mistakes! - 4 这是我朋友。我朋友很好。他不忙。 This is my friend. He is fine. He is not busy.

Please, check my sentence if it has any mistakes! - 3 这是孩子们。这是勇孩和女孩。他们是朋友。 These are friends. This is a boy and a girl. They are friends. Thank you in advance!