14.Marie is certainly not so intelligent as her sister.

$\Rightarrow$ Marie’s sister is certainly more intelligent than her.

15. Anna is 18 years old, and Sue is 20 years old.

$\Rightarrow$ Anna is younger than Sue.

16. Jane can swim further than I can.

$\Rightarrow$ I can’t swim so far as Jane do.

17. George is not as fat as he used to be.

$\Rightarrow$ George used to be fatter than he is now.

18. Have you got a cheaper carpet than this ?

$\Rightarrow$ Is this the cheapest carpet you have got?

19. Mr. Pepper works more efficiently in the morning. He works less efficiently in the afternoon.

$\Rightarrow$ Mr. Pepper works more efficiently in the morning than in the afternoon

20. She was not eager to leave the city. I didn’t think about that.

$\Rightarrow$ She wasn’t as.

21. I have to finish my work before evening. He has to finish his work earlier.

$\Rightarrow$ He has to finish his work earlier than I have.

22. He is interested in sports. You are, too.

$\Rightarrow$ You and he are both interested in sports

23. The bus takes longer than the train.

$\Rightarrow$ The train doesn't take longer than the bus

24. She used to spend much money but now she doesn’t.

$\Rightarrow$ Now she doesn’t spend as much money as she used to.

25. The exercise is not difficult. I think it’s difficult.

$\Rightarrow$ The exercise isn't as difficult as I think.

14. Marie’s sister is certainly more intelligent than her.

15.  Anna is younger than Sue.

16. I can’t swim so far as Jane do.

17.  George used to be fatter than he is now.

18. Is this the cheapest carpet you have got?

19.  Mr. Pepper works more efficiently in the morning than in the afternoon

20. She wasn’t as.

21. He has to finish his work earlier than I have.

22. You and he are both interested in sports

23.  The train doesn't take longer than the bus

24. Now she doesn’t spend as much money as she used to.

25. The exercise isn't as difficult as I think.

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