He had planned to make a compromise，buthe changed his mind at the last minute. A. therefor

He had planned to make a compromise，but he changed his mind at the last minute.
A. therefore
B. otherwise
C. anyhow
D. somehow

A. therefore B. otherwise C. anyhow(答案→)D. somehow解析：句意：他曾计划做出让步,但不知何故,他在最后一分钟改变了他的想法。therefore 因此；otherwise 否则； anyhow 无论如何，不管怎样； somehow不知怎么的，不知何故。前半句他曾计划做出让步，后半句他改变了主意，应是不知道原因，故选D。

我也是这个答案