Rewrite the following sentences using comparative clause:

rewrite the following sentences using comparative clause:
1)Today I don't feel as tired as I did yesterday.
-> Yesterday
2) The examination was easier than we had expected.
-> The examination
3) I felt nervous before the interview. My friend did, too.
-> My friend 
4) Lucy doesn't look as young as she really is.
-> Lucy looks
5) Both I and my sister can cook very well.
-> I