分类：教育/科学-外语学习
问题：请帮忙解决一些简单的高中英语问题：111hewassosad__ 
111he was so sad ___ he pt himself in the room for several days without talking to anybody(A ) as to       (B) to        (C) because        (D)that为什么要这么选呢  谢谢了
回答：111he was so sad ___ he kept himself in the room for several days without talking to anybody
(A ) as to (B) to (C) because (D)that
选D
so...that 是太……以至于的意思。

B明显不选，因为to后不跟从句
A中，so...as to 是由于……而……的意思
C也是表原因
根据空格后从句的意思，连接词应为表结果的词，故选D