Although he knew little about the large amount of work done in the field he succeeded ot

问题补充：

Although he knew little about the large amount of work done in the field, he succeeded other more well - informed experimenters failed.

A. which

B. that

C. what

D. where

答案：

A. which

B. that

C. what

(答案→)D. where

解析：where引出地点状语从句。succeed是不及物动词，不可接宾语。