1.   Do you two know each other?

2.   Everybody knew each other, and had grown up in proximity, if nothing else.

3.   For as long as they had known each other it had been their nest, their retreat, their beautiful private world.

4.   He had been her dressmaker since the early thirties and they knew each other very well.

5.   How long have you two known each other?

6.   I wondered when they had known each other and why the parents had never mentioned the affair to me?

7.   In the case of the innocent parties they must have known each other for at least two years.

8.   Most knew each other as part of the small but growing group of black professional dancers in New York.

9.   Some wanted to maintain long-term friendships, having known each other from school or college.

10.   The two women hardly know each other, but the bond, even across the long-distance phone line, is immediate.