V. Fill in the following sentences by using PAST PERFECT CONTINUOUS TENSE: Part 1 1. We ………………………………………………… (play) football for half an hour when it started to rain. 2. I …………………………………………………. (study) English for a short time when the electricity went off. 3. She ……………………………………………… (do) her homework before you came in. 4. His knees and hands were very dirty. He ………………………………………….. (crawl) in the garden. 5. I ……………………………………………… (drive) the car for five years when I sold it. 6. We were very tired. We ………………………………………………. (travel) for about sixteen hours. 7. They were out of breath. They ……………………………………………… (run) for a long time. 8. He ……………………………………………. (live) in London for ten years when he had an accident. 9. He was tired because he ……………………………………………….. (write) letters all morning. 10. He …………………………………………….. (repair) the radio for an hour when you arrived.