The trouble was their not (being able to) agree among themselves,为什么括号内不是 having been able

分类: 作业答案 • 2021-12-31 20:27:02

问题描述：

答

是描述一种事实那在什么情况下用having~~请举个例子吧。。现在完成时额..就想问用having错在哪里