We [send] postcards.
We sent postcards.
Susan [sing] a song.
Susan sang a song.
I [sit] on a mountain.
I sat on a mountain.
He [sleep] in the garden.
He slept in the garden.
I [speak] to my grandfather.
I spoke to my grandfather.
They [swim] in the ocean.
They swam in the ocean.
Diana [take] a dance class.
Diana took a dance class.
I [teach] my sister.
I taught my sister.
He [tell] a funny story.
He told a funny story.
He [throw] the ball.
He threw the ball.
I (wake up) on the sofa.
I woke up on the sofa.
You [wear] flip-flops.
You wore flip-flops.
She [win] the race.
She won the race.
I [write] a letter.
I wrote a letter.
