Is the key in Lost and Found yours?用鲁教版六年级上册学过的内容来讲。Is that your key in the lost and found case?第五课内容是，是这样，没错，可是Is that your key in the lost and found case?这句话有毛病吧？因为我的汉译是（失物招领箱里的钥匙是你的吗？）而你说Is that？that？that？汉译貌似米有那个吧？请你改一下答案，我就选你了！！@~(*^__^*) ……is it your key in the lost and found case?