he explained it to me did I make sense of what he said.A. Hardly hadB. Not untilC. Shortl

he explained it to me did I make sense of what he said.
A. Hardly had
B. Not until
C. Shortly after
D. No sooner

A. Hardly had(答案→)B. Not untilC. Shortly afterD. No sooner解析：根据后面的倒装：did I make sense of what he said.可知前面是否定词放在句首的部分倒装句，排除C，而hardly和no sooner后面用倒装句，然后搭配when和no sooner的从句，只有not until放在句首+从句，后面的主句倒装，这句话的意思是：直到他向我解释我才理解他说的话。所以选B。

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