_______left the door unlocked must be held responsibility for the accident.
A.Whomever B.Whoever
C.Whatever D.Whenever
_______left the door unlocked must be held responsibility for the accident.
A.Whomever B.Whoever
C.Whatever D.Whenever
解析:选B。 考查连词。分析句子结构可知,所填部分引导一个主语从句且在从句中作主语,故排除A项和D项,且根据句意“无论是谁没有锁门,都必须为这次事故负责”可知选B项。