Put the adjectives in the superlative form.
1.London is_ city in the UK. (crowded).2.The Beatles are _ music group from Liverpool. (popular).3.horse riding is one of _ sports of the UK. (beautiful).4.Travelling around Britain is_ tring to do. (exciting).5.Stonehenge is one of_ sights in the UK. (interesting).6.City Hall is one of_ buildings is London. (modern)