my opinion

2:English is known all over the world. In addition, English is the official language in many countries. it's true that the number of the people who speak Chinese as a first language is the largest in the world, but the number of the people who speak English as a second language is the largest in the world.


5:When I listen to the music, I make it a rule to follow the song as often as possible. It's important to improve our listening ability. I think speaking English is the best way to improve listening ability ,so I recommend to sing a song in English.