题目内容
Every possible means _____. However, nothing can ______ him dying of lung cancer.
A. has tried; stop B. have tried; keep
C. has been tried; prevent D. have been tried; stop
C
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题目内容
Every possible means _____. However, nothing can ______ him dying of lung cancer.
A. has tried; stop B. have tried; keep
C. has been tried; prevent D. have been tried; stop
C