After John had repaired the car, he sold it___

After John had repaired the car, he sold it.
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7. Steven King wrote the book.
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8. You should send the email today.
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9. The doctor must examine you again.
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10. The company has produced cars since the beginning of the century.
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11. The Egyptians buried pharaohs in pyramids.
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12. They will meet you at the train station.
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13. Has everyone read the instructions?
14. The nurse reads the newspaper to the old man every day.
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15. They must have left the documents behind.