That was the steepest mountain they had ever climbedA.would climb B.have climbed C.had ever climbed D.was climbing给理由!奥,错了That was the steepest mountain they _________

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That was the steepest mountain they had ever climbed
A.would climb B.have climbed C.had ever climbed D.was climbing
给理由!
奥,错了
That was the steepest mountain they _________

前句:past tense
后句past perfect tense
+ever加重语气

因为前面有个was 所以后面的动词会用过去完成式 也就是会加上had

这是他们爬过最陡的山。
以前爬过的~~~~过去完成时