The Elliots

Choose the most appropriate expression for each gap.
   brother-in-law      grandsons      husband      nephews      sisters-in-law      wife   
Sir Walter has got three daughters: Mary, Anne and Elizabeth. Mary is married to Charles. So, she is his and her sisters are Charles's . Mary's sons are her sisters' and her father's .
When Anne marries Captain Wentworth, he becomes Anne's and both Mary's and Elizabeth's .