Comparative or Superlative?

This is _____ car in the world.
1. faster than
2. the fastest
My father is _____ your brother.
1. taller than
2. the tallest
John's house is _____ yours.
1. bigger than
2. the biggest
Your dog is _____ in the world.
1. uglier than
2. the ugliest
You are _____ person I know.
1. the laziest
2. lazier than
Lisbon is _____ city in Portugal.
1. bigger than
2. the biggest
Bill Gates is _____ Madonna.
1. richer than
2. the richest
My cousin Mary is _____ her brother.
1. the most intelligent
2. more intelligent than
My car is _____ yours.
1. faster than
2. the fastest
This is _____ painting in the world.
1. more valuable than
2. the most valuable