易混淆的单词： AGOAgo

But that was 20 years ago .

但是这是20年前。

That was a long time ago .

那是很久以前的事情了。

That would have been unthinkable 20 years ago .

这样的改变20年之前是不可思议的。

The nordic crises were not so long ago , yet they seem a world away .

nordic危机距今并不遥远，但看来像另一个世界的事。

Mr arafat died eight years ago .

阿拉法特逝于八年前。