Ответ:

1-He David is Robert's son.

2-She Mary is Charlie's great-grandmother.

3-They James and Bob are Richard's nephews.

4-They Jane and John are Martha's parents.

5-She Kate is Robert's wife.

6-He Peter is Mary's husband.

7-She Betty is Kate's daughter.

8-He Bob is John's grand son.

9-She Jane is David's grandmother.

10-She Susan is John's granddaughter.

12-He Peter is Betty's great-grandfather

13-She Martha is David's aunt.

14-They Jane and John are Bob's grandparents.