12. His income is double _____ it was five years ago.

C. as
什么的两倍
is double as

他的收入是五年前的两倍

c句子意思表示他现在的收入是他五年前收入的一倍 是作比较 用is double as

C

C

His income is double __as___ it was five years ago.
A. that B. which C. as D. what
as在此作代词。五年前的收入。
我是从事英语的，不明再问。