I've never seen Star Wars.
1. He left quite early but he hasn't arrived yet
2. We haven't seen each other since we left school.
3. Have you ever written a poem?
4. She has never been to Istanbul.
5. I lent him 50 euro last week, but he hasn't paid me back yet.
6. I don't see them often but I've known them for ten years .
7. What year did you leave school?
8. We're lost. We have already been down this road twice.
9. I sent her an email last week, but she hasn't replied yet .
10. They have lived in that house since 1980.
With "so":
1. He won the competition, so he received a gold medal.
2. I know that you are tired, so I will let you rest.
3. She was explaining the new theme with inspiration, so the lection was interesting.
4. The project was bad, so they did not win.
5. My friend said that he was not feeling good, so he stayed at home.
With "so that":
1. My sister worked so hard that she passed the exam.
2. John played so cleverly that Michael couldn’t beat him.
3. The ring was so expensive that I couldn’t buy it.
4. She is so high that she can touch the ceiling!
5. The table is so heavy that I cannot lift it at all!