看到孩子突然抽搐起来，妈妈立刻叫了救护车。

The mother called an ambulance immediately when she saw her child ___convulsing suddenly.

看到恐怖片里的场景时，她吓得浑身抽搐。

She was ___convulsing with fear during the scary movie scene.

经济危机严重动摇了整个金融体系。

The economic crisis ___convulsed the entire financial system.