4. We went to Greece for our holidays.
They left on the first train.
My friends gave me a surprise party last weekend.
I wrote them an email about it.
I saw my old friends at the concert.
I knew all about it before them.
5. 1. Forgot
2. Got
3. Met
4. Said
5. Found
6. Bought
7. Knew
8. Saw
9. Left