B. Use the Past Perfect Continuous Tense. 1. There was a smell of cigarettes when I entered the room. (somebody, to smoke) 2. He was feeling very tired. (to drive the car, all day) 3. He was listening to music. (for an hour, before I came) 4. The students were discussing their plans. (for a long time, before the teacher came) 5. The child was sleeping. (for an hour, when we returned) C. Use the Future Perfect Continuous Tense. 1. She will be typing the documents at 6 o’clock tomorrow. (for an hour, by the time you come back) 2. We’ll be reading this book this time tomorrow. (already, for two hours, when you ring us up) 3. They’ll be having dinner when he comes. (for half an hour, when you call for them 4. He will learn German next year. (already, for four years, when he enters the Institute)