They use computers to keep the traffic _____ smoothly. A. being run B. run C. to run D. running
2023-02-07 12:20:42 106次 2009年普通高等学校招生全国统一考试全国卷Ⅱ英语试题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容:
They use computers
to keep the traffic _____ smoothly.
A. being
run B.
run C. to
run D. running
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