How does it__that he is so badly off when he earns quite a good salary.
问题描述：
How does it__that he is so badly off when he earns quite a good salary.
A\come out
B\come up
C\come along
D\come about
答
我选D come about:（发生的意思）
How does it__that he is so badly off when he earns quite a good salary
全句意思是：那么差的他是怎样（使）获得一份好工资
（发生）的?