Sure! Here are the completed sentences with the correct forms of the given words:

1. You'd better drive. I'm too **inexperienced** for such complicated traffic.
2. I wish you a very happy **retirement**.
3. Telling lies is **immoral**.
4. We need to push up the **industry** of our country.
5. Now that she got a job, Lena is **dependent** on her parents.
6. Your money will be refunded if the goods are not to your **satisfaction**.
7. Please **fasten** your seat belt. The plane is taking off.
8. UNO stands for United **Nations** Organization.
9. The water in this area is **pure** and should not be drunk.
10. The situation is getting **increasingly** difficult for us.

Feel free to ask if you need further assistance!