2. 外语
  3. He had ______ an emergency operation for a stomach condition, which makes doctors solemnly assured that he was potentially fatal

He had ______ an emergency operation for a stomach condition, which makes doctors solemnly assured that he was potentially fatal

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问题 He had ______ an emergency operation for a stomach condition, which makes doctors solemnly assured that he was potentially fatal.
选项 A、underlain
B、underlined
C、undergone
D、undertaken
答案C
解析
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