Complete the sentences with the comparative or superlative form of the adjectives in brackets.
1.- My sister is
my brother. (intelligent)
2.- The blue whale is
animal. (big)
3.- Iceland is
Spain (cold)
4.- This is
book I've ever read. (good)
5.- My neighbour is
person I know (lucky)
6.- Friday is the
day of the week. (busy)
7.- These trainers are much
those. (cheap)
8.- Frank works
most people. (hard)
9.- I'm
at English than you. (good)
10.- Today has been
day of the year. (hot)​

1. My sister is more intelligent than my brother.
2. The blue whale is the biggest animal.
3. Iceland is colder than Spain.
4. This is the best book I've ever read.
5. My neighbour is the luckiest person I know.
6. Friday is the busiest day of the week.
7. These trainers are much cheaper than those.
8. Frank works harder than most people.
9. I'm better at English than you.
10. Today has been the hottest day of the year.

In these sentences, comparative forms (like "more intelligent" or "cheaper") are used when comparing two things, while superlative forms (like "biggest" or "best") describe something as the most or least in a group or category.