Have you heard of it ? Firefighters rushed into a burning house, three of them unfortunately in and their lives.
A.caught; losing
B.catching; lost
C.caught; lost
D.catching; losing
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A解析试题分析：句意:你听说过吗？消防战士冲进燃烧的房子，其中的三人不幸被困住了，失去了生命。这里是独立主格结构，three of them与catch是被动关系，故用过去分词；three of them与lose之间是主动关系，故用现在分词，故选A。考点：考查独立主格结构的用法。点评：本题难度适中。独立主格结构是高中的难点，近几年考得次数较少，需要考生有分析理解复杂的句子结构的能力，还必须能够理解句意。即学即练：The thief fell to the ground, his left foot _____ and blood _____ down from his mouth.
A. breaking; running
B. broken; running
C. breaking; run
D. broken; run解析：B。句意：考查独立主格结构。foot和break之间是被动关系，blood和run是主动关系。