Exercise 1. Checking word form/choice 7. Heavy polluted factories will be closed down sooner or later. 8. The driver of the car was serious injured. 9. Bill is often late for class, which makes his teachers angrily. 10. I am surprising at how much he smokes; I’m not used to it. 11. He walked slowly because of his injuring legs. 12. Dogs that are trained to lead the blind must be loyalty, intelligent and calm. 13. Most of us were feeling sleepily at the meeting because the speaker had a very monotonous voice. 14. The more frequent you exercise, the greater physical endurance you will have. 15. Several people arrived too lately to be admitted to the performance.