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 1个回答 分类:综合 2014-09-30 问题解答: 我来补答 has been built 都是 A city 主语has been built up 谓语 展开全文阅读