题目内容
| He was so busy that _____ I could say hello to him he had rushed out of the room. |
A. when B. before C. since D. until |
试题答案
B
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题目内容
| He was so busy that _____ I could say hello to him he had rushed out of the room. |
A. when B. before C. since D. until |
试题答案
B