1. it's the biggest surfboard i've ever seen. 1. that surfboard is enormous.(big/see) 2. these trainers are fantastic.(comfortable/buy) 3. sylvia's great friend (good/have) 4. it's a really stupid song (silly/hear) 5. this pizza is horrible (bad/eat) 6. that girl really annoys me (annoying/know)

1. That surfboard is the biggest one I've ever seen.
2. These trainers are the most comfortable ones I've ever bought.
3. Sylvia's the best friend I've ever had.
4. It's the silliest song I've ever heard.
5. This pizza is the worst one I've ever eaten.
6. That girl the most annoying one I've ever known.