问题
选择题
| When the telephone rang, I happened _____ in the kitchen, but when I came over to get it, it rang off. |
A. to cook B. to have cooked C. to be cooking D. having cooked |
答案
答案：C
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| When the telephone rang, I happened _____ in the kitchen, but when I came over to get it, it rang off. |
A. to cook B. to have cooked C. to be cooking D. having cooked |
答案：C