Professor Smith, along with his assistants, _____on the Project day and night to meet the deadline....
2022-12-12 02:47:23 125次 2015届河北衡水第十四中学高一升级考试英语卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Professor Smith, along with his assistants,
_____on the Project day and night to meet the deadline.
A．work B．working C．is working D．are working
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