Put the adjective/adverb in the brackets in its correct form

Put the adjective/adverb in the brackets in its correct form.
1. This dress is cheap, but that one is __________________ (cheap).
2. Do you know ______________________ (crowded) place in Vietnam?
3. That castle is ____________________ (old) than any castles we visited during our holidays.
4. She drives ____________________________ (slowly) as her mother.
5. The cat is getting more and _____________________ (beautiful).