Solutions
1. This place will never feel the same ever again once they demolish the museum.
2. As soon as Priya reached home, she called to let me know.
3. Even though he had paid all the bills, the system showed that he had some due payments to be done.
4. Before leaving for the office, just give me a call.
5. Though she was tired, she agreed to help me out.
6. Unless she finishes the task given, she cannot go home.
7. While he was walking across the street, he saw that the banks were closed.
8. Priya knew that there was a nationwide lockdown today only after he told her about it.
Subordinating Conjunctions
Subordinating Conjunctions usually include a variety of conjunctions, which is unlike coordinating conjunctions. Subordinating conjunction refers to the word which connects an independent clause and a dependent clause in the formation of a sentence.