当月亮升起时，远处的狼群开始嚎叫。

When the moon rose, the wolves in the distance began to ___howl.

球迷们在比赛中咆哮着表达对裁判的不满。

The fans ___howled their dissatisfaction at the referee during the match.

孩子们听到这个滑稽的故事后都哄堂大笑起来。

The children ___howled with laughter after hearing the funny story.