You know the uni is the most challenging, so number ten is challenging.

That was challenging.

This is challenging work to do.

It's not very challenging any more.

However, the situation in Cité Soleil remains challenging.

But deciphering the script is a very challenging task.

The selection of indicators has proven to be challenging.

Skepticism, because you must always be challenging.

DM She's very tough it's most challenging.

It's this immensely exciting and challenging problem.

That is an assumption that needs challenging.

They're challenging the very notion of Western models of development.

You can see the trapezoids are a little challenging there.

Everything we do, we believe in challenging the status quo.

The Limits to Panic

The Limits of Bonapartism

The Limits of Democracy

In Japan, they say that sushi is challenging.

BC EDL is this immense, technically challenging problem.

The motion challenging the expert report was therefore not taken up.

It's going to be very challenging to deal with.

Women challenging these norms are punished by violent means.

The Limits of German Guilt

The Limits of Climate Negotiations

The Limits of Twitter Diplomacy

The Moral Limits of Markets

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Why the limits to the movement?

At the best of times, traveling between Indonesia's many islands is challenging.

You embrace the challenging task of energizing the work of the First Committee.

We live in difficult and challenging economic times, of course.

It's a very challenging task. But more to come later.

And we as Africans need to start challenging our leaders.

We express our gratitude for Mr Smith's outstanding, challenging speech.

In this challenging environment, administrative infrastructures have continued to function.

This has been particularly challenging in remote and insecure areas.

These have indeed been very challenging times for our Organization.

The Earth always did have limits.

The Limits of Chinese Soft Power

Haiti and the Limits of Generosity

Testing the Limits of Fossil Fuels

Trafficking within countries had become commonplace, challenging the usual definition of the phenomenon.

That area's off limits.

And this is a very challenging idea. It's a very challenging idea to mainstream media. It's a very challenging idea to anyone who has invested an enormous amount of time and expertise, and who has a lot of energy invested in the notion that he or she knows better than everyone else.

The Limits to Fighting the Islamic State