她公开宣布放弃继承权，震惊了整个家族。

Her public ___renunciation of the inheritance shocked the entire family.

她正式宣布放弃继承权，令全家人感到震惊。

Her official ___renunciation of the inheritance shocked the whole family.

他签署了一份文件，正式声明放弃对房产的所有权。

He signed a document declaring his ___renunciation of all claims to the property.