They solved the problem in the end. Yet I really don’t know ________. A. how did they make it B. how...
2022-11-26 20:13:23 153次 2016年初中毕业升学考试（海南卷）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：
They solved the problem in the end. Yet I really don’t know ________.
A. how did they make it
B. how they made it
C. why did they make it
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