1. The boys stood on the desks. They wanted to get a better view.
-> The boys stood on the desks in order to get a better view.
2. We learn English. We want to have better communication with other people.
-> We learn English in order to have better communication with other people.
3. We lower the volume. We don’t want to bother our neighbours.
-> We lower the volume in order not to bother our neighbours.
4. I will wirte to you. I want you to know my decision soon.
-> I will wirte to you so that you can know my decision soon.
5. These girls were talking whispers. They didn’t want anyone to hear their conversation.
-> These girls were talking whispers so that they didn’t want anyone to  hear their conversation.
6. The little girl feigned to be sick. She hoped we didn’t make her work.
-> The little girl feigned to be sick so that she hoped we didn’t make her work.
7. I spoke loudly. I wanted eerybody could hear me clearly.
-> I spoke loudly so that erybody could hear me clearly.
8. Mar often goes home as the class is over . She doesn’t want her mother to wait for her.
-> Mar often goes home as the class is over so that her mother didn't wait for her.
9. Tom gets up early. He doesn’t want to be late for school
-> Tom gets up early in order not to be late for school
10. Wellfrog hid the sweets under his pillow. He didn’t want his mother to see him 
-> Wellfrog hid the sweets under his pillow so that his mother didn't see him