我们联系了一家房地产中介来帮我们购买第一套房子。

We contacted a real estate ___agency to help us buy our first home.

她在大学附近的一家旅行社找到了一份暑期工作。

She found a summer job working at a travel ___agency near her college.

一家广告代理公司为这款新产品设计了营销活动。

An advertising ___agency designed the marketing campaign for the new product.