为什么说：Where have they been?

Where have they been? Where have they been?怎样回答? They have been actually using farming practices where they a Any idea where they may have been made Where have you been? where you been where have you been 英语翻译Let's go for a walk.Where have they been?P2:Where are th They have never been opened.为什么不可以是They never have been open Where have you been there days?这里不是应用have been 为什么there前不加to where have they lunch? where you have been与where have you been区别 24.--- “Where have you been?”