【题目】_____ made Edward sad is that Henry moved to London, leaving him to run the office they had set up together.
A. Why B. When
C. That D. What
在线课程【答案】D
【解析】
根据名词性从句的位置和关系词的用法判断。
考查主语从句。句意:使爱德华伤心的是亨利搬到了纽约,留下他一个人经营他们一起开创的工作室。从句位于be动词前是主语从句,主语从句中made缺少主语,因此使用what。故选D。