He left the party early on the pretext of having work to do.

他借口有事要处理，早早离开了聚会。

《牛津词典》

She's always having the builders in to do something or other.

她总是让建筑工人到家里来干这干那。

《牛津词典》

We will be having a meeting to decide what to do.

我们将开会决定该做什么。

《柯林斯英汉双解大词典》

That means to be nervous about having to do something, like speaking in front of a crowd.

VOA: special.2009.06.28

And that then let's me get to, basically, base this code. Having done that, height I simply call base with get float, I call height with get float, and do the rest of the work.

现在让我们看看这段代码，其实已经写好了，我简单的调用下，用来得到一个浮点数，再调用下，来得到另外一个浮点数，然后做剩下的工作就可以了。

麻省理工公开课 - 计算机科学及编程导论课程节选

and I just want to be at home, not having to do whatever I have to do,

并且我只想呆在家，不用做那些我必须做的事情，

去溜冰场 - SpeakingMax英语口语达人

Having do not track as the default, a default that we all know most people will stick with, thus means that all of the complicated work that the advertising industry has done to increase the performance of internet advertising becomes, for those users at least, near irrelevant.

FORBES: Microsoft Sticks With Do Not Track Default: And Boy Are The Advertisers Angry

Either the machines do everything and we humans have everything without having to do anything.

FORBES: Will Robots Take Our Jobs? Who cares?

It would be much better to win by having a do-over on the referendum rather than by having the Court take the question outside of the political process.

FORBES: Conservatives Should Oppose DOMA