______ is dangerous for children to swim in the river alone. A. It B. That C. This D. He
2023-01-13 19:31:14 189次 2014-2015学年山东章丘市九年级上期中英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
______ is dangerous for children to swim in the river alone.
A. It B. That C. This D. He
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