She/ not/ singing
She is not good at singing.
You /riding a horse.
You are good at riding a horse.
A vet / helping animals.
A vet is good at helping animals.
He/ not/ climbing
He is not good at climbing
A dog / dancing
A dog is good at dancing
They/ making surprises.
They are good at making surprises.
the cat/ playing guitar
the cat is good at playing guitar.
This man / driving a car.
This man is good at driving a car.
My friends/ not / cooking
My friends aren't good at cooking.
Bird / flying
Bird is good at flying
He/ playing tennis
He is good at playing tennis.
the cat/ not/ jumping
The cat is not good at jumping.
A penguin / run
A penguin is good at running.
He /fixing things.
I'm good at fixing things.
He/ not/ walking a dog.
He isn't good at walking a dog.