Change the clause of reason to phrase

Exercise 3: Change the clause of reason to phrase.
1. Because she was careful, she didn’t make any mistakes in her answers.
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2. I started to cough because there was smoke in the room.
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3. We didn’t go fishing because the water was rough.
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   4. I couldn’t do the test because it was difficult.
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5. Peter didn’t go to school yesterday because he was sick.
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6. Mary went to bed early because she felt tired.
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7. She didn’t go to the circus with Betty because she had a bad cold.
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8. John succeeded in his exam because he worked hard.
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9. She stayed at home because her mother was sick.
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10. I like him because his father is kind to me.