How did it that he is so badly off when he earns quite a good salary?A. come outB. come up

问题补充：

How did 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

答案：

A. come out

B. come up

C. come along

(答案→)D. come about

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