When you're breaking new ground it's difficult, because everyone's always looking for the sure thing.

It's difficult, because every mistake we make, we're punished for.

But he found the schedule difficult because his work required so much time for traveling and arranging the equipment.

The first two years were the most difficult because every day I'd put the key in the door and not know what would happen.

He added that replacing such specialists would be difficult "because the city doesn't offer enough."

It isn't difficult because no cos they're two small families.

However, it will be difficult because neither team has a weakness in the starting five.

Going through that mob was difficult not just for the sights but because of its overall atmosphere.

Communication was difficult because each used a different manual but they got along fine by printing.

It will be difficult because the process changes now.