The fireman________ the burning building three times before the fire was put out. A. is entering B. ...
2022-09-23 06:40:38 125次 上海市闵行区2019届九年级第二学期（二模）质量调研考试英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
The fireman________ the burning building three times before the fire was put out.
A. is entering B. has entered C. was entering D. had entered
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