单选题 Things might have been much worse if the mother ______ on her right to keep the baby.
A. has been insisting B. had insisted
C. would insist D. insisted

【正确答案】 B

【答案解析】[解析] 本题考查虚拟语气的用法：从句表示与过去事实相反的假设，应该用过去完成时。例如：There are people who would never have fallen in love if they had never heard of love．有些人若是从未听说过恋爱的事，是绝不会坠入情网的。