她突然宣布辞职，让所有人都感到惊讶。

The ___abruptness of her resignation announcement surprised everyone.

他回答问题的突兀态度让大家都感到不舒服。

The ___abruptness of his answer made everyone feel uncomfortable.

山坡的陡峭让徒步变得十分困难。

The ___abruptness of the hill made hiking quite challenging.