It took him a long time to the skills needed to become a professional artist.A. acquireB.

问题补充：

It took him a long time to the skills needed to become a professional artist.

A. acquire

B. inquire

C. Require

D. request

答案：

(答案→)A. acquire

B. inquire

C. Require

D. request

解析：考查动词。acquire“得到；获得”，符合句意。inquire“询问”； require“需要”； request“请求”。 句意：他花了很长一段时间才学会成为一名专业艺术家所需要的技能。故A正确。