[A] to [B] at [C] about
A few minutes (46) , my parents brought my birthday cake (蛋糕) with ten candles (蜡烛) on it. I was then asked to cut (47) and the guests were served. Music (48) during the party. The guests were talking and laughing. (49) the party, I thanked my parents (50) holding such a lovely birthday party for me.