John, ___the bet, had to pay for the dinner.

John, ___the bet, had to pay for the dinner.
A、lost
B、having lost
C、losing
D、having loss
【正确答案】：B
【题目解析】：分词做原因状语。从语法结构来分析，首先可排除A和D；再看两个动作发生的顺序，就得出B。