---Has Timmy finished his painting yet？ ---I guess not. He______on it when I walked past the classro...
2022-11-06 12:02:49 24次 江苏省镇江市润州区2016届九年级中考二模英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
---Has Timmy finished his painting yet？
---I guess not. He______on it when I walked past the classroom.
A. is working B. was working C. has worked D. had worked
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