她因心力衰竭住院了。

She was hospitalized for ___heart ___failure.

尽管她很努力，但在考试中的失败让她很沮丧。

Despite her hard work, her ___failure in the exam made her very upset.

这场演出是个彻底的失败，观众纷纷提前离场。

The performance was a total ___failure as the audience left early.

经理对客户投诉的置之不理是严重的失职。

The manager's ___failure to address customer complaints was a serious neglect of duty.