Решение:
Нужно вставить правильную форму прилагательного.
- fast — fast
- fatter — fat
- friendlier — friendly
- funnier — funny
- noisier — noisy
- longer — long
- bigger — big
- smaller — small
- hotter — hot
- happier — happy
- tastier — tasty
- wider — wide
- younger — young
- older — old
- sunnier — sunny
- busier — busy
- thinner — thin
- weaker — weak
- nicer — nice
- colder — cold
Ответ: fat, friendly, funny, noisy, long, big, small, hot, happy, tasty, wide, young, old, sunny, busy, thin, weak, nice, cold.