观众们张大着嘴，惊讶地看着魔术师从空帽子里变出一只兔子。

The audience watched ___open-mouthed as the magician pulled a rabbit from an empty hat.

孩子们张大嘴巴听着老师讲冒险故事。

The children listened ___open-mouthed as the teacher told an adventure story.