Odpowiedź:
1. Swimming is cheaper than surfing
Surfing is more expensive than swimming.
2. Pete's homework is more difficult than Ben's homework.
Ben's homework is easier than Pete's homework.
3. Justin's bicycle is bigger than Maisy's bicycle.
Maisy's bicycle is smaller than Justin's bicycle.
Mam nadzieję, że pomogłam i liczę na naj :)