He had planned to make a promise，but he changed his mind at the last minute．
A. therefore
B. otherwise
C. anyhow
D. somehow
网友回答
A. therefore
B. otherwise
C. anyhow
(答案→)D. somehow
解析：考查副词辨析。Somehow意为不知何故。句意为，他本打算做出承诺，但是不知何故他在最后一刻改变了主意。 therefore 因此 otherwise否则 anyhow 无论如何