1 had not done half the work yet, ...2...after he had left. 3 ...concert had already begun4 he had been ill5 She had done nothing before I came. 6. Iwas sorry that I had hurt him. 7. I did my exercises after I had finished my report. 8. After you had left I went to sleep. 9. We understood it after the teacher had explained it tous. 10. I told him that I had never done such a thing until then. 11. He had already learnt French before he left for France. 12. In France he soon remembered all he had learnt.13. After I had heard the news I hurried there. 14. He put on his dressing gown andslippers after he had got up. 15. After he had put on his suit he went down for breakfast.