3.Hestartedtocollectshellsabout4yearsago.(用forabout4years替换4yearsago)
<p>问题:3.Hestartedtocollectshellsabout4yearsago.(用forabout4years替换4yearsago)<p>答案:↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">方毅的回答:<div class="content-b">网友采纳 Hehascollectedshellsforabout4years.
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