I made her acquaintance through his introduction.

The boy and the girl seem to know each other.

We two became acquainted at a party.

I struck up an acquaintance with him.

I got acquainted with him in France.

I got acquainted with her in France.

I became acquainted with her two weeks ago.

Being together all the time, my Japanese classmates got to know each other very well.

We got to know each other in London.

How did you come to know one another?

I got to know him when I was a student.

Tom and Mike became acquainted through their mutual friends.

How did you come to know her?

That's how I came to know her.

That's how I got to know her.

I made my first contact with him there.

This is the way in which we can become acquainted with one another.

This is how I got acquainted with them.

When did you come to know her?

How did you come to know each other?