The little boy stared at the strange man questioningly, not whether to believe what he had said. A. ...
2022-08-22 11:52:28 187次 天津市2019届高三下学期毕业班联考（二）英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The little boy stared at the strange man questioningly, not whether to believe what he had said.
A. to know B. knowing
C. known D. having known
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