I. write questions for the underlined parts in the following sentences.
1. Hung kings are the founders of our nation and they became the frist kings of our country. ->
2. 2\(^{^{ }nd}\) september has been the national day of Viet Nam since 1945. ->
3. Ha Nhi mainly worship their ancestors. ->
các ban giúp mk nha mk đg cần gấp