Complete the sentences with the correct adjective form of the adjectives in brackets .
1.Is it the ____(high) building in the town?-Yes,it is.
2.The book is_______(interesting) than the film.
3.London is the_______(big) city in Europe.
4.Who is the_______(good) student in your class?-Tim Brown.
5."Than was the______(bad) football match in this season," his grandpa said.
6."This portrait is ______(oid) than the other pictures," the guide said.