The boy _in the.street till a PLA man came to pic
问题描述：
The boy _in the.street till a PLA man came to pic
k it up
A was crying.B has been crying
C has cried D had been crying 为什么选D 阿 不是现在完成时么
答
后面是came to过去时,再之前就应该是过去完成时,因为中间是till直到,说明男孩哭到有人来带他走,过去已经发生的要用过去完成时态哦 谢谢你啊