找出画线部分读音与其他三个不同的选项。
Her son began to play __________piano when he was only three. Now he’s very good at it .
—I'm sorry to keep you waiting for me so long. —.
—I want to knowthe day after tomorrow? —Ask Jim. He must know.
If he, I will let you know. He also wants to see you.
—Would you like to go hiking with us? —Sorry. My grandmother is ill. I'll go toher.