What is the past of be?
was/ were
What is the past of write ?
wrote
What is the past of swim?
swam
What is the past of make?
made
What is the past of see?
saw
What is the past of study?
studied
What is the past of cook?
cooked
What is the past of dance?
danced
What is the past of guess?
guessed.
What is the past of run?
ran
What is the past of read?
read
What is the past of think?
thought
What is the past of watch?
watched
What is the past of eat?
ate
What is the past of tell?
told