didn't leave his office-----he finished his homework ----填（） a since b until 理由也要
didn’t leave his office-----he finished his homework
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解决时间 2021-08-13 19:55
- 提问者网友：太高姿态
- 2021-08-12 20:43
最佳答案
- 五星知识达人网友：刀戟声无边
- 2021-08-12 20:58
B,not until是直到…才的意思!since加过去时一般表完成时,
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