___,he is honest.

选C：
这是一个倒装句：
as / though引导的让步从句必须将表语或状语提前 （形容词,副词,分词,实义动词提前）.
注意：
1) 句首名词不能带任何冠词.
2) 句首是实义动词,其他助动词放在主语后.如果实义动词有宾语和状语,随实义动词一起放在主语之前.
Try hard as he will,he never seems able to do the work satisfactorily.
---Will