孕37周，突发持续性剧烈腹痛，伴少量 * * 流血，贫血程度与外出血量不相符()
初孕妇，孕29周，晨醒发现 * * 流血，量多，色鲜红，伴心悸()

A．先兆子宫破裂

B．胎盘早剥

C．前置胎盘

D．羊水栓塞

E．胎盘滞留

I will let you know as soon as he _____.     [ ]

A. comes back    

B. will come back

C. is coming back  

D. come back