Only when we had finished all the work （） that it was too late to take a bus home. ( 章节：1 难度：2)
- A、did we realize
- B、will we realize
- C、we did realize
- D、we will realize
正确答案:A
答案解析:有
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Only when we had finished all the work （） that it was too late to take a bus home. ( 章节：1 难度：2)
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