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这个空怎么填Ilistenedbut(nothear)anything老师讲的是Ilistenedbutdidn'theardanything老师是不是讲错了?用了didn't为什么还要用hear的过去式还有,一周一到三次是onetothreetimesaweek还是oncetoth

题目详情
这个空怎么填I listened but ___(not hear) anything
老师讲的是I listened but didn't heard anything
老师是不是讲错了?用了didn't 为什么还要用hear的过去式
还有,一周一到三次是one to three times a week 还是once to three times a week
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答案和解析
didn't hear
肯定老师讲错
口误吧