Rewrite the sentences, using an IF construction
1. They got the children back alive only because they paid the ransom at once.
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2. The examiner read the passage very Quickly, so the candidates didn't understand it.
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3. They weren't wearing life-jackets; perhaps that's why they were drowned.
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4. He didn't get to the top of his profession, perhaps because his wife didn't encourage him.
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5. She didn't speak to him, possibly because she was so shy.
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6. Landlord: She threatened to set fire to her flat; that's the only reason I asked her to leave.
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7. We didn't visit the museum because we hadn't time.
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8. I only came up the stairs because the lift wasn't working.
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9. We didn't listen carefully; perhaps that's why we made this mistake.
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10. We got a lift, so we reached the station in time.
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