Помогите пожалуйста по англ. яз. составить негативные предложения

Если по заданию, как в учебнике, в Past Continuous, то так:  1. I was not studying last night. 2. My parents were not working last Saturday. 3. It was not raining yesterday. 4. We were not doing an exam at nine o'clock. 5. I was not waiting for you. 6. We were not speaking English.