Ответ:

New York is crowded. Yes, but Tokyo is more crowded, than New York. Mexico city is the most crowded.

The Hilton is luxurious. Yes, but The Sheraton is more luxurious than The Hilton. The Ritz is the most luxurious.

London is old. Yes, but Rome is older, than London. Athens is the oldest.

The Sudan is sunny. Yes, but Egypt is sunnier then the Sudan. Arizona is the sunniest.

Cars are noisy. Yes, but trains are noisier, than cars. Aeroplanes are the noisiest.