1.Having spent some time in the city, he had no trouble finding the way to the history museum. 2. Compared with the place where 1 grew up, this town is more prosperous an d exciting. 3. The professor required that we hand in our research reports. 4. It is suggested that the air conditioner should be fixed by the window.5. The more you explain. the more confused l am. 6. The more exercise you take, the fewer chances you will have of catchinga cold. 7. The victim would have a chance to survive if he had been taken to hospital in time. 8. You would not have failed if you had followed my instructions. 9. The anti: irus agent was not known until it was accidentally found by a doct0 10. Not until he had accomplished the task did he realize that he was seriouslyill.