Lightning flashed through the darkness over Sibson’s bedroom skylight（天窗）.Sibson was shaken by a clap of thunder ____21___ he knew what was happening. The storm had moved directly _____22____ his two-story wooden house. Then he heard the smoke alarm beeping.    Sibson rushed down the stairs barefoot to    23      ; he opened the door to the basement（地下室）, and flames      24      out. Sibson ran back upstairs to call 911 from his bedroom. “I felt      25      because the room had a separate outdoor stairway,” he explains.    But the phone didn’t work, and when he tried to go down the outdoor stairway, he was      26      by a wall of flames. Sibson realized he was trapped（困住）.    Sibson’s house was three kilometers      27      the main road and was so well hidden by trees that he knew calling for help would be    28      .    Up a hill nearby lived Sibson’s neighbor, Huggons. He was lying in bed when something like a smoke alarm      29      his ears. He jumped out of bed, took his    30      and flashlight, and headed down the hillside toward the    31    . That was when he saw the rolling heavy smoke.    Huggons dialed 911, and the operator warned him not to    32    the house. But Huggons said, “There is no way I am going to listen to Sibson    33    and die in that fire.”    “Anyone there、” Huggons called out. Then he heard “Help! I’m trapped!” coming from the second floor balcony（阳台）. He entered the house, but soon had to run back to catch his    34    .    After one more    35    inside the house, Huggons gave up and    36    around back.    The wind parted the smoke just    37    for him to catch sight of Sibson. But there was no way to get to him. He    38    the flashlight into the woods and noticed a ladder. He took it over to the balcony and    39    Sibson down just as the second floor of the house fell off.    Sibson is still    40    when he tells the story. “ I was alone that night,” he says. “Then I heard the most beautiful sound in my life. It was Huggons.”