英语 English problem (8 10:57:12).________ its power at last in 221B.C.Qingshihuang united the whole country ,known as Qin Dynasty.A.Having expanded B Expanged C Expanging D Had expanded
问题描述：
英语 English problem (8 10:57:12)
.________ its power at last in 221B.C.Qingshihuang united the whole country ,known as Qin Dynasty.
A.Having expanded B Expanged C Expanging D Had expanded
答
a
主谓一致
这是状语从句的省略,Qingshihuang united the whole country ,known as Qin Dynasty.是主句,主语是Qingshihuang是人,和expand是主动关系,所以是用ing形式
但是应该是“先壮大实力”然后统一,动作有一个先后顺序,所以选a