their confidence in him was greatly(?) by his prolonged hisitation before taking any action.
问题描述：
their confidence in him was greatly(?) by his prolonged hisitation before taking any action.
a appreciated
b confirmed
c undermined
d cherished
什么叫their confidence in him?选什么?
答
c undermined 逐渐削弱
their confidence in him 他们对他的信心
翻译：他行事欠果断使他们慢慢失去了对他的信心.
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