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1. Oil prices have risen to __________________________ record levels in the past three years.
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2. Q: Is he a clerk? A: No, he's __________________________ manager. (There's only one manager)
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3. Q: Is he a clerk? A: No, he's __________________________ manager. (There's more than one manager)
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4. Many of __________________________ programmers that started last year have quit.
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5. Many _________________ programmers that started last year have quit.
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6. We hope to make _________________ big advances during the early stages of this project.
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7. Take a look at this report. _________________ findings are really surprising.
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8. Q: What are you working on? A: I'm trying to finish __________________________ presentation that I told you about this morning.
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9. Q: What are you working on? A: I'm working on __________________________ presentation for today's meeting. (The person asking the question doesn't know about this presentation)
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10. This is _________________________ very challenging task.
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