11. The weather forecast said that the weather was changing for the better.
12. "What's the matter with you? What did the doctor tell you?" "I've just found out that my brother's condition has changed to the worse."
13. He was in such difficulty that he turned for help to a complete stranger.
14. The professor said my report was good but, to make it better, I must make a few changes in it.
15. The teacher's second question was about the part Cromwell played in the history of England, and the girl knew the answer to that, too.
16. I am not sure I always get him right, he speaks with such a heavy accent.
17. Will you put on the light, it's getting dark and I can't see what I am reading any more.
18. It was a most unusual picture to see the streets of this southern town covered with snow.
19. Motorists don't like driving in foggy weather.
20. A raincoat is good only on rainy days; why do you wear it in all weather?
21. Why do you speak so highly of this writer? For one thing, it's early days to say what will become of him (it's his first book), for another, he is still very young.