Here's how you can complete the sentences with "so that" and "in order to/so as to":

1. I have opened the window **so that** I can let some fresh air in.
2. I stopped at a rest area **in order to** have some rest.
3. I bought a lovely suit **so as to** wear at the graduation ball.
4. You need to take some days off **so that** you can travel with us.
5. Many people leave their countries **in order to** have better lives.
6. Make sure the network access is enabled **so that** you can connect to the internet.
7. I trained every single day **in order to** improve my performance.
8. For my summer vacation, I am planning to visit Ireland **so that** I can visit my parents.
9. I called you **so that** I could invite you to my birthday party.
10. Jenny worked so hard **so that** she could pass her exams.

Feel free to ask if you need anything else!