change phrases of purpose to of purpose or vice versa:
1: We hurried ro school so as not to be late.
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2:He climbed the tree in order to get a better view.
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3You should get up early so that you will have time to review your lesson
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4 Some young people like to earn their own living in order that they will be independent of their parents.
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5 We should do morning exercises regularly so as to improve our health.
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6 We should take advantage of the scientific achievements of the world so that we can develop our national economy
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7 Every people in the world must unite their efforts to maintain and protecr peace
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8 She put on warm clothes so that she couldn't catch could.
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9 He hurried to the station so as not to miss the train
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10 She locked the door so as not to be disturbed