问题
选择题
_____ to his experiment in the lab, the idea for the new plan came to his mind. [ ]
A. While devoting
B. While devoting himself
C. While he was devoted
D. While devoted
答案
答案：C
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_____ to his experiment in the lab, the idea for the new plan came to his mind. [ ]
A. While devoting
B. While devoting himself
C. While he was devoted
D. While devoted
答案：C