Once he makes up his mind to do something he will devote himself to it.A. stronglyB. ext

问题补充：

Once he makes up his mind to do something, he will devote himself to it.

A. strongly

B. extremely

C. entirely

D. freely

答案：

A. strongly

B. extremely

(答案→)C. entirely

D. freely

解析：副词辨析。A强烈地；B极其地；C完全地；D自由地；句意：一旦他下定决心做一件事情，他就会全力以赴。根据句意说明C正确。