Got my students to form sentences using 7 subordinating conjunctions:

https://m.stacker.news/47394

1. John was a bad boy because he vandalised school property.
2. As John was a bad boy, he got caned by the discipline master.
3. Since he got caned by the discipline master, he regretted misbehaving.
4. When I did not submit the homework, my teacher shouted at me, "Where is your homework?"
5. While I was out with my family, robbers broke into my house.
6. I wanted to visit Japan, however, my family wanted to go somewhere else.
7. Although my family wanted me to follow them, I refused.
8. My mother scolded me because I came home late.
9. As I played soccer at the field for a long time, I went home late.
10. Since I did not join the soccer team, the team is not performing well.
11. When I went to school, my friend cried because he lost his phone.
12. While my family was watching a movie, I was playing games.
13. I love this girl, however, she rejected me.
14. Although I ate my breakfast, I was still hungry.

Took me one entire hour, but am feeling a sense of accomplishment!