Professor Smith, along with his assistants, ______ on the project day and night to meet the deadlin...
2023-02-15 01:27:09 124次 山西省康杰中学2010届高三5月模拟 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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