He / d_ k_ _ _ _ _ ( - )
He can't do karate.
The cat / climb a tree ( - )
The cat can climb a tree.
My granddad / r_ _ very f_ _ _. ( + )
My granddad can run very fast.
We / d_ g_ _ _ _ _ _ _ _ _ ( - )
We can't do gymnastics.
Jane / c_ _ _ _ m_ _ _ _ _ _ _ _ (+)
Jane can climb mountains.
She / m_ _ _ c_ _ _ _ ( - )
She can't make cakes.
I / m_ _ _ _ m_ _ _ _ _ _ ( + )
I can make models.