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| 1 | She tried to contact me, but the phone . . . (be) busy. |
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| 2 | I . . . (go) for a swim if I'd wanted to. |
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| 3 | I . . . (not say) such a terrible thing. |
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| 4 | I don't know who wrote that letter. It . . . (not be) Mrs Johnson, as she wasn't in the office that day. |
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| 5 | I . . . (not leave) my keys at home - I'm sure they were in my pocket. |
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| 6 | I'm sorry, I ... (let) you know what was happening. |
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| 7 | He . . . (warn) us that he was going to leave his job. |
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| 8 | They. . . (not leave) without being seen by anybody. |
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| 9 | I think you . . . (tell) your parents you were going to be late. They were very worried. |
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| 10 | We don't know who took the money. The office was full of people, it . . . (be) any of them. |
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| 11 | . . . (you not be) just a little more polite? |
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| 12 | You . . . (apologize) for being late. |
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| 13 | They . . . (not get) into the house through a window; they were all closed. |
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