Here are the appropriate connectors for each sentence:

1. I am going shopping. It rains, **however**.
2. I have studied hard for the exam. I; **nevertheless**, failed.
3. **Although** Aylin knew the post office’s address, he didn’t tell me.
4. Hakan drank two cups of coffee **although** he drank a cup of coffee before.
5. Sevgi went to school **although** she was ill.
6. **Although** the exam is so difficult, I had a good mark.
7. I missed the bus. **Nevertheless**, I wasn’t late for school.
8. We don’t like camping. We, **however**, love fishing.
9. We still fed the cat **although** it wasn’t hungry.
10. He decided to buy that car **although** it was so expensive.
11. He is 30 already, he doesn’t want to work to earn money. **However**.
12. I don’t know how to play chess. I really want to learn it, **though**.
13. It was late, we still went out for a while, **nevertheless**.
14. We didn’t have much money, we went shopping very often, **however**.
15. We managed to do it **although** he is absent from work.