题目内容：

Lightning flashed through the darkness over Sibson’s bedroom skylight(天窗). Sibson was shaken by a clap of thunder ______ he knew what was happening. The storm had moved directly over his two-story wooden house. Then he heard the smoke alarm beeping.

Sibson rushed down the stairs barefoot to _______ ; he opened the door to the basement(地下室), and flames exploded out. Sibson ran back upstairs to call 911 from his bedroom. “I felt ______ 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 ______ by a wall of flames. Sibson realized he was trapped(困住).

Sibson’s house was three kilometers off the main road and was so well hidden by trees that he knew calling for help would be ______.

Up a hill nearby lived Sibson’s neighbor, Huggons. He was lying in bed when something like a smoke alarm ______ his ears. He jumped out of bed, took his phone and flashlight, and headed down the hillside toward the ______ . That was when he saw the rolling heavy smoke.

Huggons dialed 911, and the operator warned him not to ______ the house. But Huggons said, “There is no way I am going to listen to Sibson ______ 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 ______.

After one more ______ inside the house, Huggons gave up and circled around back.

The wind parted the smoke just ______for him to catch sight of Sibson. But there was no way to get to him. He ______ the flashlight into the woods and noticed a ladder. He took it over to the balcony and ______ Sibson down just as the second floor of the house fell off.

Sibson is still ______ 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.”

1.A. before    B. while    C. since    D. until

2.A. hide    B. wait    C. check    D. escape

3.A. safe    B. worried    C. glad    D. tired

4.A. burned    B. stopped    C. shocked    D. covered

5.A. limited    B. false    C. fruitless    D. regretful

6.A. struck    B. missed    C. touched    D. passed

7.A. noise    B. road    C. smoke    D. danger

8.A. research    B. enter    C. leave    D. damage

9.A. call    B. roll    C. scream    D. sigh

10.A. breath    B. attention    C. ladder    D. flashlight

11.A. stay    B. chance    C. thought    D. attempt

12.A. clear    B. open    C. enough    D. fit

13.A. led    B. put    C. drove    D. shone

14.A. persuaded    B. kicked    C. pulled    D. forced

15.A. nervous    B. surprised    C. proud    D. thankful