Being a disabled man he has difficulty A. earning livingsB. earning his livingC. to earn

问题补充：

Being a disabled man, he has difficulty

A. earning livings

B. earning his living

C. to earn livings

D. to earn his living

答案：

A. earning livings

(答案→)B. earning his living

C. to earn livings

D. to earn his living

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