convulse|convulsed|convulsing

婴儿因高烧开始剧烈抽搐。

The baby started to ___convulse violently due to high fever.

看到那条蛇时，他吓得全身抽搐起来。

He ___convulsed with fear when he saw the snake.

孩子发高烧时，全身剧烈抽搐。

The child was ___convulsing violently due to high fever.