Resposta :
Resposta:
a) Tom's mum and Nick's mum aren't chasing birds.
b) Jenny isn't playing with chip's ball.
c) Nick and Tom aren't talking about the flowers.
d) Fluff isn't running after chip.
e) Nick's dad and Tom's dad aren't playing football
Explicação:
Só um breve lembrete:
Ao transferir o verbo auxiliar (to be) para o negativo, só adicionar o not
Portanto, são possíveis dois formatos gráficos
Are not/is not ou aren't/isn't
Espero ter ajudado :)