我爸爸一开始是在一家百货公司当销售助理。

My dad ___started ___out as a sales assistant in a department store.

她一开始在自己国家当小演员，后来成为了名人。

She ___started ___out as a small actress in her own country before becoming a celebrity.

他一开始在军队，但后来转行经商。

He ___started ___out in the military but later switched to a career in business.