办公室里安装了五部新电话。

There are five new ___telephones installed in the office.

现代电话技术让我们能够随时与世界各地的人保持联系。

Modern ___telephones allow us to stay connected with people around the world anytime.

我明天会打电话给你讨论旅行计划。

I will ___telephone you tomorrow to discuss the travel plans.