I have taken jogging for about an hour every morning as my daily routine the weather.
A. whatever
B. however
C. whichever
D. whenever
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(答案→)A. whatever
B. however
C. whichever
D. whenever
解析：句意:我按照常规无论什么天气每天早晨都慢跑。whatever无论什么；however无论怎样，它后跟形容词或副词；whichever无论哪个；whenever无论什么时候。这里空格后是省略句，完整的是whatever the weather it is.whatever引导的是让步状语从句，它在从句中作表语，根据句意故选故选A。