Write the contracted form for the following words.

Here are the contracted forms of the words:

1. Can not: $\boxed{\text{Can't}}$
2. Is not: $\boxed{\text{Isn't}}$
3. I have: $\boxed{\text{I've}}$
4. I am: $\boxed{\text{I'm}}$
5. It is: $\boxed{\text{It's}}$
6. That is: $\boxed{\text{That's}}$
7. We are: $\boxed{\text{We're}}$
8. She is: $\boxed{\text{She's}}$
9. They will: $\boxed{\text{They'll}}$
10. They are: $\boxed{\text{They're}}$
11. Do not: $\boxed{\text{Don't}}$
12. Let us: $\boxed{\text{Let's}}$
13. Are not: $\boxed{\text{Aren't}}$
14. There is: $\boxed{\text{There's}}$
15. Was not: $\boxed{\text{Wasn't}}$
16. I will: $\boxed{\text{I'll}}$
17. I have: $\boxed{\text{I've}}$
18. We will: $\boxed{\text{We'll}}$
19. Have not: $\boxed{\text{Haven't}}$
20. Will not: $\boxed{\text{Won't}}$