1. I(finish) my homework before dinner.
2. She(not see) that movie before last night.
3. They(already leave) when we arrived.
4. He(just eat) lunch when his friend called.
5. We(not visit) that museum before our trip.
6. You(read) the book before the discussion in class.
7. My parents(travel) to Europe several times before I was born.
8. She(not finish) her project before the deadline.
9. I(never be) to a concert before last weekend.
10. They(arrive) at the party before we did.
11. He(lose) his keys before he found them in his bag.
12. We(not hear) the news until the next day.
13. She(study) French for five years before moving to Paris.
14. I(clean) the house before our guests arrived.
15. They(decide) to leave early because of the traffic.