Not until I came home last night to bed .A. Mum did goB. did Mum goC. went MumD. Mum wen

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A. Mum did go
(答案→)B. did Mum go
C. went Mum
D. Mum went
解析：句意为：昨天晚上直到我到家，妈妈才去睡了。Not until 位于句首，后面的句子要使用半倒装，半倒装即助动词，系动词，情态动词位于句首，故答案应为B。