Transform the sentences according to the instructions given in the bracket:
1. As it rained heavily, the schools were closed, (change into a compound sentence)
2. She was very tired. She couldn’t walk. (Change into a simple sentence)
3. He burnt his midnight oil. Yet, he did not clear his CA examination with distinction. (Change into a complex sentence)
4. The master was very angry. He shouted at the sleeping watchman. (Change into a simple sentence)
5. Though the leader made many efforts, he could not bring unity among the party cadres. (Change into a compound sentence)