The missing boy was last seen ____near the river.A playing B to be playing C play D to play ,选哪个请问为什么不选D呢?被看到、、、,不定式变为被动语态时,不是应该还原to吗?

The missing boy was l___ by police in the woods. Last week the missing boy was seen_____by the lake填什么?A walk B walking C walked D have walked the missing boy was last seen ___near the housea playingb to play为什么不能选B而选A when the boy was The old man found the missing boy ——偶然 the police （ ）looking for the missing boy in the forestis b.was c.ared.were应该选c，但是为什么不选d呢 英语翻译child answering the description of the missing boy was found safe and well in London yesterday.well的意思不能省略每个词都要翻译,老师要求的. ( )alone in the room by his parents made the boy cryA.his being B.he was left C.his missing D.because his leaving the ----boy was last seen----near the East Lake  A.missing,playing.C.missed,played,我选得C,为什么, At this moment your job is______ (find)the missing boy. The _______ boy was last seen ________ near the East lake.第二个空为什么不是to play啊A missing;playing B missing; play C missed;played D missed;to play 1.The missing boy was last seen ____ near the river.A.playing B.to be playing C.play D.to pl1.The missing boy was last seen __A__ near the river.A.playing B.to be playing C.play D.to play不是“被看见”吗?为什么不选B?8.You can’t have th The boy was monster The boy was a monster the boy was in blue She c_ the passengers and fond that one was missing He found the wallet was missing这句话对吗? The whole class ( ) searching for the missing boy when the heavy rain poured down.A. was B.were C. had been D.would be没有一个人给出了正确答案 The police are still s_____ for the missing boy along the river