题文
I had meant to meet you at the airport this morning but I was too busy for I ________ a report.
| A.wrote | B.was writing |
| C.have written | D.had written |
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I had meant to meet you at the airport this morning but I was too busy for I ________ a report.
| A.wrote | B.was writing |
| C.have written | D.had written |
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