№1

2) more interesting

3) cheaper

4) noisyer

5) more expensive

6) boringer

7) more relaxed

8) more modern

                                                            №2

2) than

3) more

4) are

5) busier

6) quieter

7) more

8) better

                                                        №3a

2) h

3) a

4) b

5) i

6) e

7) c

                                                     №3b

2) is cheaper than

3) is newer than

4) is (more free или more deserted) than

5) is better than

6) is lighter than

7) is noisyer than

8) is  older than