I go to the Everland last Saturday.
went
She writes a letter last night.
wrote
They are good friends at that time.
were
We sing the song "Colorful World" last month.
sang
They swim the Han-river last summer.
swam
They give some flowers to their parents.
gave
The baby eats a hamburger yesterday.
ate
She does her homework 2 hours ago.
did
My friend tell me the secret last weekend.
told