​What vs That

More examples

1. I am not sure what will happen. But I think that something bad might happen.
2. I want to discuss what I have not heard.
3. Sunset is always what I love best.
4. It was seldom that I met my school mates in my native town.
5. It was there that the strike was to begin.
6. What I want to do is to pretend not to be here.
7. She became convinced that some misfortune had overtaken her.
8. She walked into the park that she might cross to the city centre.
9. He knew that someone was stalking him.
10. What I mean is that you are the first person to be in my house.
11. Others have been curious to learn what portion of my income I devoted to charitable purposes.
12. Some have asked what I got to eat; if I did not feel lonesome; if I was not afraid; and the like.But I cannot remember any instance in which this feeling prevented me from repeating the naughtiness when I failed to get what I wanted.
13. I understood a good deal of what was going on about me.
14. I cannot recall what happened during the first months after my illness.
15. From that vantage point, if you had tried to look fifty years ahead to what the world would be like in the year 2500 BC, you would have expected very little change
16. As the nation grew, so did what came to be called the American Dream.
17. Then he tried to tell what it was like, what it was good for, and what was done with it.
18. Then try to tell what it is, what it is like, what it is good for, and what is done with it.
19. No one knows what the mother might do.
20. I reckon that's something that needs to be done.
21. I suppose that's the one thing that troubles me most.
22. You said you wanted to marry a man capable of wearing the pants because that's what you wanted him to do.
23. I do what I say.
24. What happened then I do not remember.
25. That happened something is unknown to me.
26. What I used to do in childhood is pleasant to recall.
27. I can not tell you what he is afraid of.
28. There's something that you should know.
29. It was the best film that I've ever seen.
30. Do you have anything that will help my throat?
31. Everything that you say seems silly to me.
32. Nothing that anyone does can replace my lost bag.
33. I'm sorry, but that is all that I saw.