When I hear the national anthem I would be standing here singing national anthem. Operative upon the rights and duties of citizens, and to cooperate in joint activities with members of the school.
When I heard the song I was singing the national anthem to stand up. Practice the rights and responsibilities of good citizenship and cooperation in activities with members of the school.
When I hear the National Anthem I'll stand sang the national anthem. Behave in accordance with rights and responsibilities, and to cooperation in doing activities with members of the school!