What took you so long?=Why are you so late? 你怎么花了这么长时间？
例句：
A:Look at the time,you're late again.
看看时间，你又迟到了。
B:I'm sorry.
对不起。
A:What took you so long?
你怎么花了这么长时间？
B:I got stuck in the traffic jam.
我遇到了交通堵塞。
A:What took you so long?
你怎么花了这么长时间？
B:I got an accident on my way.
来的路上遇到车祸了。
A:Oh my god,are you ok?
天哪，你还好吗？
B:I’m fine.
我还好。
A:It's our first date,and you're late.
今天是我们第一次约会，你就迟到了。
B:I'm so sorry,I'll make it up.
对不起，我会弥补的。
A:Fine,what took you so long?
算了，你怎么花了这么长时间？
B:You know,since it's our first date,I was thinking about what to wear to impress you,so I got late.
你知道的，既然这是我们第一次约会，我就在想穿什么来使你印象深刻，所以我就迟到了。
背景音乐：
Avant-Wanna be close
