Mr. Wu___this math problem____him many times, but he still doesn’t understand it. A. explains ; to B...
2023-02-13 10:57:21 18次 2013-2014学年江苏省泰州市九年级上学期期中考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Mr. Wu___this math problem____him many times, but he
still doesn’t understand it.
A. explains ; to B. has explained ;
for C. ha
s
explained ; to D. explained ; with
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