They must be sent quickly 他们必须快速的送过去

She must be sent (must sent) to the hospital sent的过去分词 They must be careful的一般疑问句 Theory must be combined with practice.理论必须联系实际.请教这里为什么用过去分词c They must ( ) ( )get to school early tomorrow.他们明天必须尽早到校 为什么选 be sent must be sent 不行?He promised me that the message They sent the injured to hospital.他们把伤员送到医院.这个句子的宾语是什么. “These animals must be sent to the zoo at once ” More _____ satellites must be sent up _____ space. drqw save sent 的过去分词 他们一定是在海边拾贝壳 they must be ()()shells by the sea 懂英语的人士,谁知道be sent through/be sent on/be sent in/be sent with