The students are sorry to hear that the famous singer______(be) away for half an hour.
问题描述：
The students are sorry to hear that the famous singer______(be) away for half an hour.
是填has been 还是will be ? has been应该好些吧?
答
呵呵,大概两个都可以吧!如果没有上下文的话,两个答案都应该没有什么语法问题!