请英语高手给小的分析一下这三道题为什么是这答案?

来源:百度知道 编辑:UC知道 时间:2024/06/30 09:40:43
1. Along with the letter was his promise ____ he would visit me this coming Christmas.(2004上海春季高考)

A. which B. that

C. what D. whether

2. The other day, my brother drove his car down the street at ____ I thought was a dangerous speed. (2004上海春季高考)

A. as B. which

C. what D. that

3. Luckily,we'd brought a road map without ____ we would have lost our way. (2004北京春季高考)

A. it B. that

C. this D. which

答案:1. B 2. B 3. D
为什么第三题不能选A

第一个that是用来引出了同位语从句
第二个what代替speed做宾语
第三个which是定语从句中的宾语(是介词without的宾语,介词后面如果接的是引导词,那么介词可以提前到定语从句前)