4. The traffic was bad. I arrived at the airport on time. (though)

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5. We enjoyed the vacation. It rained a lot. (although)

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6. She felt sick. She went to work. (though)

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7. I was really tired. I couldn’t sleep. (even though)

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8. He is very rich. He isn’t happy. (although)

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9. She couldn’t answer the question. She is very intelligent. (though)