问题描述：
求助高手：英语单选题分析
1、Not until Mary started to work__to know how important a good education was.
A.did she begin B.she began C.had she begun D.she had begun＿＿
2、though __not to read in poor light time and time again ,the boy still does it.
A.warming B.warned C .being warned D.having warned
1、Not until Mary started to work__to know how important a good education was.
A.did she begin B.she began C.had she begun D.she had begun＿＿
2、though __not to read in poor light time and time again ,the boy still does it.
A.warming B.warned C .being warned D.having warned
问题解答：
我来补答展开全文阅读