单选题You would have helped&nbs

问题补充：

单选题Youwouldhavehelpedyourmotherdosomehousework.Butyou_______.A.don’tB.didn’tC.wouldn’tD.weren’t

答案：

B解析would have done 表示与过去事实相反的假设，连词but引出一个过去的事实。故此处用一般过去时，完整的句子为But you didn’t helped your mother do some housework