We can call on our former teacher tomorrow.

我们明天可以去拜访过 去的老师。

We can call on our former teacher tomorrow.

我们明天可以去拜访过去的老师。

Allow me to present my former teacher to you.

请允许我向你们介绍我以前的老师。

I call on my former teacher from time to time.

我常去看望我从前的老师。

How did you get in touch with your former teacher?

你是如何同你以前的老师联系上的？