Hi, I guess the words between extra spaces are what you questioned about (might be some blank fields to be filled), so just listed them with my personal opinions, as follows:
1. 懂 correct. “听懂" means understood.
2. 开 correct. "打开" is equivalent to the verb "open".
3. 完 correct. "写完" means finished the writing.
4. 到 correct. or you can use "完", based on the context.
5. 到 correct, while "在" is not applicable here.
6. both 到 and 在 are correct.
7. 成 correct. similar with "as" in English.
8. 好 wrong. should be "到", refers to the expression “想到".
9. 好 a bit misnomer, you may want to use "惯" instead.
10. 住 correct. "记住" means kept something in mind.
11. 完 incorrect. Should be "好" or "过” instead.
12. 惯 incorrect. I guess it's about to say "吃饱" here.
13. 错 correct. This guy somehow bought the wrong math textbook.
14. 到 incorrect. Should be "忘掉/忘记".
15. 懂 correct. See term 1 above.
Only listed Part1 due to my limited time, hope it helps.