He devoted himself to his research and got many achievements.A. entirelyB. extremelyC. ca

发布时间：2020-08-17 00:16:00

He devoted himself      to his research and got many achievements.

A. entirely
B. extremely
C. carefully
D. certainly

网友回答

(答案→)A. entirely
B. extremely
C. carefully
D. certainly
解析：考查副词：A. entirely 完整的，B. extremely非常的，C. carefully仔细的，D. certainly当然，句意是：他完全投入研究，并取得了很多成就。选A。
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