,句子“oh,it is you ,I did not recognized you ""中由于有了个it is像 you故不能用haven€t you来表达现在的影响了。那么这题中：9. (24) The price , but I doubt whether it will remain so.A. went down B. will go downC. has gone down D. was going down C 表示持续。 那个but I doubt whether it will remain so.不也表达出对现在的影响了吗，为何还要用现在完成呢？

表示事实it is you has gone down表示已经下来了。

,啊，字打错了：句子“oh,it is you ,I did not recognized you ""中由于有了个it is you故不能用I haven€t recognized you来表达现在的影响了。但像这题也应该是这个道理啊？9. (24) The price , but I doubt whether it will remain so 能否再更清楚的解释一下呢，谢谢。