类型：单选题

问题：Why didn’t you tell me about your trouble last week? If you（）me, I could have helped.

选项：

told

had told

were to tell

would tell

答案：B

解析：

考查if引导的虚拟语气，根据题干主句could have done和last week可以判断是对过去的虚拟，表示对过去的虚拟从句用had done结构，译为“你为什么没有告诉我你上周遇到的麻烦？如果你告诉我了，我就能帮你。”故选B。