His three main challenges in 2009 were completed within six months.

My main challenge was to make a period drama on a low budget.

The main challenge is to make sure you have good people running the operation.

"There are a number of companies involved, and our main challenge was making sure everybody's systems worked together," he said.

It is important for all levels of government to be clear, in advance, which department will lead on main potential challenges.

"Getting a working machine has to be their main challenge."

Their main challenge the rest of the season is to play beyond expectations.

One of the main challenges can be to figure out what the game is all about.

This is where the main challenge and the real change lie.

Her main challenges are seen as crime and the economy.