他们正在讨论在市中心建造一个新的消防站。

They're ___talk ___about building a new fire station downtown.

7年前，他们正在讨论在公园里建造另一个公寓综合体。

7 years ago they were ___talk ___about building another apartment complex in the park.

几个月来，我们一直在计划去欧洲度假。

We have been ___talk ___about taking a vacation to Europe for months.