Надо.! supply the articles if they are necessary. there is _ pianino, _ violin and _ flute in the room. i can play _ triangle. it's easy. my brother plays _ football almost every day. put _ guitar into my room , please. i like the song of _ violin because it's soft and sentimental.

There is a piano, a violin and a flute in the room.
I can play the triangle. It's easy.
My brother plays football almost every day.
Put the guitar into my room, please.
I like the song of the violin because it's soft and sentimental.