【英语2级听力】晚上睡不着了-Awake at Night（在线收听）

She cannot sleep. She tries exercising. She runs three miles around her house. She does 100 jumping jacks. She dances. She goes back to bed. She tries to sleep. She still cannot sleep. She asks her older sister what to do. Her older sister sings her a lullaby. She falls asleep.