问题
选择题
Since I know ______ , I understand why they needed so much money.
A．what a hard life they led
B．they led what a hard life
C．what they led a hard life
D．how hard a life did they lead
答案
答案：A
题目分析：句意：自从知道他们过着多么艰难的生活以来，我就明白为什么他们那么需要钱。根据意思，去掉B。多么艰难的生活，要么用what a hard life要么用how hard a life,所以去掉C，再根据宾语从句要用陈述句句序，去掉D那么只能选A