1.everyone agrees that (...) THAT 引导是宾语从句,每个人都同意(什么.)从中文翻译就可以理解AGREE 后面的是宾语,所以当宾语是一个句子,那就是宾语从句.
2.response (in that emergercy ) ,只是动词后面的一个介词短语,不要把IN THAT 看作什么固定搭配,E.G:LIE IN THE BED,STAY AT HOME,所以这里的THAT只是一个指示代词,指那个紧急情况.
3.it was your quick-witted response in that emergency that has led to this satisfactory outcome.IT WAS ...THAT...是一个强调句型.还原句子为Your quick-witted response in that emergency has led to this satisfactory outcome.对比两个句子很明显前一句子当中的主语被强调.强调句型将句子中的it is / was …that同时省去,句子仍然成立,如本句.;而主语从句中将that与后面部分代替it,句子才成立.所以注意强调句与主语从句当中为避免头重脚轻IT...THAT 句式.