为什么选B,（答案是B）搞不懂这个,谁可以帮我看看是怎么回事吗?hisfatherbegantoworkhewassevenyearsoldaasoldasbasearlyascsincedwhile

Question

为什么选B,（答案是B）搞不懂这个,谁可以帮我看看是怎么回事吗?
his father began to work___he was seven years old
a as old as
b as early as
c since
d while

Answer 1

as old as :和.一样老
as early as:早在.时候
since:自从.以来（多用于现在完成时）
while:然而
所以,答案就一目了然了