The traffic is moving very slowly as so many carson their way back to Shanghai. A. am B. is C. are D...
2023-02-06 14:14:02 208次 2014年初中毕业升学考试（上海卷）英语（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The traffic is moving very slowly as so many carson their way back to Shanghai.
A. am B. is
C. are D. be
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