He seems a(n) person. He always has a lot of things to do. A. smartB. helpfulC. energetic

问题补充：

He seems a(n) person. He always has a lot of things to do.

A. smart

B. helpful

C. energetic

D. excellent

答案：

A. smart

B. helpful

(答案→)C. energetic

D. excellent

解析：

试题分析: 句意：他似科间一个精力充沛的人。他总是有许多事情要做。smart聪明的，helpful乐于助人的，energetic精力充沛的，excellent优秀的。根据He always has a lot of things to do.他总是有许多事情要做 ，可知选C。