他一想到要上台演讲就浑身发抖。

He ___shudders at the thought of giving a speech on stage.

窗户在暴风雨中剧烈震动。

The window ___shudders violently during the storm.

看到蜘蛛爬过地板时，她不禁打了个寒颤。

She gets the ___shudders whenever she sees a spider crawling across the floor.