主语补足语!在线等!he was last seen playing near the river 问题一 这句话翻译过

主语补足语!在线等!he was last seen playing near the river 问题一 这句话翻译过 The ___boy was last seen near the river A missing; playing B The missing boy was last seen ____ near the river. The missing boy was last seen ___ near the river. the missing boys were last seen 空格 near the river; a:playing The missing boys were last seen playing near the river这里为什么用 1.The missing boy was last seen ____ near the river.A.playin The ____ (miss)boy was last seen ____ (play)near the river . 2道单选题The missing boy was last seen ___ near the river.A.play The missing boy was last seen ____near the river.A playing B The missing boy were last seen ________ near the river. The missing boys were last seen _____________ near the river