✨ 最佳解答 ✨
She has nine balls, and two of the balls are red.
➡️She has nine balls, and two of them are red.
➡️She has nine balls, two of them being red.
➡️She has nine balls, two of which are red.
She has two sons, one of whom is dead.
what指the thing which 不是受格用法 不能選