11. Rewrite the following sentences using the Possessive Case of the underlined nouns: 1) Tracy has read the replies of the readers. 2) The story of Martha teaches us a lesson. 3) A century ago the natural habitat of passenger pigeons was large forests in North America. 4) Have you read the survey about zoos in the R.A.P. by Rachel and Trevor? 5) The photos of animals taken by children were fantastic.

1. Tracy has read the readers’ replies.
2. Martha’s story teaches us a lesson.
3. A century ago passenger pigeons’ natural habitat was large forests in North America.
4. Have you read Rachel and Trevor’s survey about zoos in the R.A.P.?
5. The children’s photos of animals were fantastic.

Для совместного владения у двух имён притяжательное окончание ставится у последнего; у неправильного множественного числа children используется children’s.