Old ___he is ,he is full of energy .He dares to compete with a young man .A although B as

问题描述:

Old ___he is ,he is full of energy .He dares to compete with a young man .A although B as
c even though d however

B 倒装那A C 不用能倒转吗?能分析得详细点吗?谢谢although 一般用在句首 even though 一般不倒装形容词old 位于句首时一般用as 倒装