A city has been built up 句中的谓语动词是has 还是been,还是 has been都是?请详细给我划分一下句子成
问题描述：
A city has been built up 句中的谓语动词是has 还是been,还是 has been都是?请详细给我划分一下句子成
答
has been built 都是
A city 主语
has been built up 谓语