Which words are missing? Put in and copy.
1)In winter the days are ... than in summer.It`s ...in summer than in spring.Summer is the ... season of the year.
2)The dog is a ... animal.Monkeys are ... than cats.Elephants and dolphins are the ... animals.
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1 the days are shorter (and colder)   It's warmer in summer   the hottest season2 clever   cleverer   cleverest

1) In winter the days are shorter and colder than in summer. 

It’s warmer in summer than in spring. 

Summer is the warmest / hottest season of the year.

2) The dog is a clever animal. 

Monkeys are cleverer than cats. 

Elephants and dolphins are the cleverest animals.