单选题 —Jack called to say that he would not accept the job. —I had talked him into taking it up many times. ______ since he still refuses.
【正确答案】 B
【答案解析】[考点] I can't help it.“我无能为力” [解析] 上文说“Jack打电话说将不接受那份工作”而“我已经好多次劝他接受了”，那么“既然他仍然拒绝，我也无能为力了”。