1. Susan isn't so good at English as Tim.

2.  It took us five hours to get to London.

3. He enjoys listening to music.

4. Her younger sister isn't so beautiful as her.

5. They have studied English since 2004.

1.Tim is better at english than Susan
-Susan isn't good at E than tim
2.we spent five hours getting to London
-it took........us 5 hours to get to London...............
3.listening to music gives him pleasure
-he enjoys......listening to music....
4.she is more beautiful than her younger sister 
-her........younger sister isn't as beautiful as her......
5.they began studying english in 2004
-they.....have  studied E since 2004 .............