Write could or couldn`t. i run but i walk. i sing but i talk. i read and i write. i plate late at night. i cook but i eat. i play in the street.

I couldn't run but I could walk.
I couldn't sing but I could talk.
I could read and I could write.
I couldn't plate late at night.
I couldn't cook but I could eat.
I could play in the street.