Most people think that quitting smoking is a hard thing to do.

This is the tricky part.

This is the hard part.

That's the tough part.

It was a tough test.

This task is difficult.

It was a tough game.

This is a difficult job.

This is a difficult mission.

Is life here hard?

Digging is hard work.

Chess is a very difficult game.

It's been a rough week.

That's the hardest part.

Relationships are hard work.

Here comes the hard part.

Tom has a tough job.

This is very difficult work.

Now the hard work begins.

I have a tough job.

That was the hard part.

Is your job difficult?

Is your job difficult?

A difficult task in difficult terrain

This work is difficult for us.

The job would be difficult.

It would be a difficult job.

I think French grammar is difficult.

I think French grammar is difficult.

He's had a hard life.

Tom has had a hard life.

Tom lived a hard life.

It's been a hard night for Tom.

Tom has had a difficult life.

The hardest part is already over.

I had a tough week.

Tom had a hard week.

That's an amazing thing.

This problem is not so difficult as it seems.

The most difficult part is still to be done.

The most difficult part is still to be done.

Hard work never hurt anybody.

Hard work never hurt anyone.

Tom has had such a hard life.

The other neat thing ...