After a thorough search, the rescue team finally brought the mountain climber back, .A. sa

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(答案→)A. safe and sound
B. safely and sound
C. safe and soundly
D. safely and soundly
解析：考查固定短语。And连接的两个词要求词形相同。safe and sound连接两个形容词，意思是安然无恙；safely and soundly安全地和牢固地。选项BC不合语法。句意：在彻底搜查之后，救援队终于吧登山者安然无恙的带回来了。选A。