1 We hurried to school so as not to be late
=>We hurried to school in order not to to be late.
2 He climed up the tree in order to get better view
=> He climbed the tree so as to get a better view.
3 You should get up early so that you will have time to review your lesson
=> You should get up early so as to have time to review to lesson.
4 Everybody in the world must unite their efforts to maintain and protect peace
=>Every people in the world must unite their eforts in order to/so as to maintain and protect peace.