Ответ:
- Tom's clock is big. — Tom's clock isn't big.
- The friends can swim. — The friends can't swim.
- Jim has got a frog. — Jim hasn't got a frog.
- Her cats are grey. — Her cats aren't grey.
- Bess can play chess. — Bess can't play chess.
Проверка за 10 секунд:
Редфлаг: Чтобы сделать предложение отрицательным, добавь частицу "not" после вспомогательного глагола (is, are, can, has/have).