Номер 2 заблаговременно спасибо) и

1) are tastier and bananas are the tastiest.
2) is bigger and Russia is the biggest.
3) is colder and January is the coldest.
4) are friendlier and dogs are the friendliest.
5) Are cuter and teddy bears are the cutest.
6) are darker and nights are the darkest.
7) Are brighter and days in a summer are the brightest.