The adverb clause here is 'than we had predicted', and it refers to 'colder' which is the correct answer here.
1. Parents
2. Clams
3. Couches
4. Caves
5. Ranches
6. Armies
7. Dresses
8. Hobbies
9. Glasses
10. Arches
11. Arrows
12. Mosses
13. Props
14. Patches
15. Mints
16. Babies
17. Engines
18. Enemies
19. Supplies
20. Mistakes
Where is the sentence at and i will answer it for you. I am the best at english.