Mr. Smith is young, energetic and a man you can rely on.

Mr. Smith is young, energetic and a man you can rely on.
【正确答案】：Mr. Smith is young and energetic who is a man you can rely on. 
【题目解析】：本题考查主语从句。句意：史密斯先生年轻有活力，是一个能依靠的男人。