11. I’m not a doctor.
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12. I haven’t enough money to buy this book.
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13. I live in a big city, but I don’t like it.
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14. Nam is sorry now that he didn’t accept the job.
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15. Tomorrow is a workday.
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16. We have to work this Saturday.
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17. I feel sick because I ate too much ice-cream.
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18. It’s pity that you were not here last week.
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19. I regret speaking to him so impolitely yesterday.
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20. Alan regretted asking Arthur to lend him 20$.
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