What happened to them remains somewhat of a mystery.

他们到底出了什么事，到现在仍可以说是个谜。

《牛津词典》

I want to know what happened to Norman.

我想知道诺曼出什么事了。

《柯林斯英汉双解大词典》

I've often wondered what happened to him.

我时常纳闷他出了什么事。

《牛津词典》

This week in our series, Harry Monroe and Kay Gallant tell us what happened to John Brown after he seized Harpers Ferry.

VOA: special.2009.07.02

And now Milton's in the position of asking, "What for? What's this all about? Look what happened to Edward King.

现在弥尔顿在问，“为了什么？，这都是为了什么？，看看爱德华·金。

耶鲁公开课 - 弥尔顿课程节选

Well there actually was a stock market in Russia before 1918 and in China before 1949, so what happened to investors?

实际上,俄罗斯在1918年前,中国在1949年前设有股票市场,那么投资者会得到怎样的回报呢

耶鲁公开课 - 金融市场课程节选

The researchers followed up what happened to the patients for the next five years.

BBC: NEWS | Health | 'Watch and wait' seizure advice

She adds that what happened to her "was surreal but it could've happened to anyone".

BBC: Kercher murder case: Amanda Knox proclaims innocence

Goodyear said the children appeared to be unaware of what happened to their grandmother.

WSJ: Fla. man accused of killing ailing mom, 70