It looks like you're looking to rewrite the given sentences in conditional form. Here’s how you can do it for the examples provided:

34. If you read more books, you can widen your knowledge.
35. If you eat too much fast food, you will be overweight.
36. If we try to recycle things, we will save natural resources.
37. If you finish your homework, you can go out with your friend.

Let me know if you need further assistance!