never()faith in himself he went on with his experiment A:lost B:to lose C:having lost D:losing

never()faith in himself he went on with his experiment A:lost B:to lose C:having lost D:losing

题目
never()faith in himself he went on with his experiment A:lost B:to lose C:having lost D:losing
为什么 选D?
答案
Never losing faith in himself 是动名词短语,作为状语修饰he went on with his experiment.
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