题目内容：

英语
If the foundation had not been strengthened 3 years ago,the lean in the tall building (cause) ____________its ruin.
His achievements are (compare) _______________ with the best.

优质解答

第一题填would have caused这题考查虚拟语气的用法,与过去相反的假设,虚拟条件句为If+主语+had +过去分词也就是题目的If the foundation had...,主句就用：主语＋should,would,might,could＋have done,答案是would h...