问题
选择题
| — Mary, why didn't you come yesterday? — I _____, but I had an unexpected visitor. |
A. had B. did C. would D. was going to |
答案
答案：D
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| — Mary, why didn't you come yesterday? — I _____, but I had an unexpected visitor. |
A. had B. did C. would D. was going to |
答案：D