Даю 20 балов только помогите упражнения 3,4,5,6 пожалуйста

3 упр 1. I was studying last night 2. My parents were working last Saturday 3. It was raining yesterday 4. We were doing an exam at nine o'clock 5. I was waiting for you 6. We were speaking English 4 упр 1. I wasn't studying last night 2. My parents weren't working last Saturday 3. It wasn't raining yesterday 4. We weren't doing an exam at nine o'clock 5. I wasn't waiting for you 6. We weren't speaking English 5 упр 1. Were you sleeping at six o'clock this morning? 2. Was your mum working yesterday? 3. Were you watching TV at nine o'clock last night? 4. Was your teacher talking five minutes ago? 5. Were you studying English at three o'clock yesterday afternoon?