Although John made a mistake,there’s no need to dwell on it.
问题描述：
Although John made a mistake,there’s no need to dwell on it.
答
dwell:[ dwel ] v.居住; 细说;词形变化:名词:dweller 动词过去式:dwelt/dwelled 过去分词:dwelt/dwelled 现在分词:dwelling 第三人称单数:dwells 例句与用法:1.He decided to dwell on our island.他决定到我们的岛...