“ Although ,” the boy said , “ _______ over and over , the maths problem remained confusing to me ” ...
2022-12-27 08:43:43 77次 2014届辽宁省高二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：
“ Although ,” the boy said , “ _______ over
and over , the maths problem remained confusing to me ” .
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A．explained
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B．explain
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C．explaining
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D．having explained
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本题链接：
