刚才卖关子干嘛英文怎么说

在中文中，刚才卖关子干嘛可以用 "What were you just doing?" 或 "What did you just do?" 来表达。这两个短语都是来自英语，用来询问刚才的动作或行为。

例句：

What were you just doing? 你刚才在干什么？
What did you just do? 你刚才做了什么？