Lying on the bed, Catherine fell asleep. When she woke up, it's dark. She had no idea when it was. She touched her phone, but it was power off. She supported herself out of bed and turned on the light. She saw the clock on the wall. She was startled when she knew the time. She had slept in the whole afternoon. It's almost nine o'clock in the evening! She has never slept for such a long time during the day. After sleeping so long during the day, she expected that she couldn't fall asleep at night. As there was a knock on the door, Catherine went to open the door. It's Ms. Brown, who smiled at her, "I just saw the light and I thought you woke up. Are you tired?" "No, I just didn't get enough sleep yesterday." Catherine smiled apologetically, "I'm sorry that it worries you." "Don't fee