阅读下面短文,从短文后各题所给的A、B、C 和 D四个选项中,选出可以填入空白处的最佳选项。 It seemed like any other day when fitness instructor Chantelle Lister set off to work at 7 am. It was the school holidays, so her daughters Loren and Mollie, 17 and 6, and 11-year-old son Charlie were still 1 in bed.
But within an hour, the family home in Kettering, England, went up in flames (火焰). The 2started downstairs, and deadly smoke started 3 the second floor, where the children were sleeping.
4, the family's beloved dog, Bailey, rushed to their 5 . Although the thick smoke 6 to climb the staircase, the 4-year-old dog made his way 7 and kept barking outside Loren's door until she 8 .
Loren opened the 9 to thick black smoke covering the stairs and the sound of smashing (粉碎) glass. Struggling to 10 , the teenager ran into the other 11 and managed to get the 12 children out through a window and onto the roof.
After successfully raising the 13, Bailey ran back downstairs to try to get out. 14, he was trapped in the 15 house.
“The firemen pulled Bailey out and tried to 16 him, but he was dead,” Chantelle said. “They put a blanket over him and I kept 17, 'That could have been one of my children.' Bailey was such a character and so 18. The children wouldn't be here 19 him. He's my hero and I'll be 20 to him forever.”