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Ex.13. Replace the "of-phrase" by the noun in the possessive case.

1. Doctor Manson kept his eyes fixed on the face of Miss Barlow, putting a question now and then. 2. The cheeks of Miss Barlow continued to brighten. 3. A faint smile played round the lips of Miss Barlow. 4. The voice of a girl was heard in the distance. 5. The books of Cronin are very popular in our country. 6. Jon slipped his hand through the arm of his mother. 7. The beauty of Ireland is really breathtaking. 8. The coats of the children need cleaning. 9. The cover of the book is very bright. 10. The policy of the company is still not clear to me. 11. The construction of the new metro line has started. 12. The TV programmes of last night were very interesting. 13. I was shocked by the opinion of Bess. 14. We need to paint the roof of the house. 15. The back of the chair was too low. 16. There was a lamp at the head of the bed.