Sure! Here are the completed sentences using the comparative structure "as...as" with the adjectives provided:

1. Jane is as pretty as a doll.
2. Cats are not as friendly as dogs.
3. She didn’t want to be late, so she ran as fast as she could.
4. Watching movies is not as entertaining as reading books.
5. Please call me as soon as possible.
6. I am not as tall as you.
7. This book is not as interesting as that one.
8. This summer is not as hot as last summer.
9. Yesterday it was not as sunny as today.
10. I think my essay is as good as yours.
11. Sleeping on the sofa is not as comfortable as in bed.
12. This hotel is not as expensive as the one near the beach but it is much better.
13. Do you think learning Japanese is as difficult as learning English?
14. This musician is not as popular as that one.
15. The river isn’t as deep as it looks.

For the next part:

1. My friends went to see a movie.
2. This musician plays the same instrument as me.
3. Critics say that this painter has the same style as that one.
4. My best friend is as old as me.
5. Anne bought me the same dress yesterday.
6. My best friend likes the same books as my brother.
7. My sister likes the same TV programs as me.
8. My sister has the same subject as Jane.
9. My sister has the same hobbies as me.

Feel free to ask if you need further assistance!