They are earnest about their children's education.

He works hard so as to succeed.

He worked so hard that he succeeded.

By dint of hard work he succeeded at last.

Bust my ass?

Such a simple one, everyone knows this one.

Success is due less to ability than to zeal.

This book is a result of his enthusiastic research.

You're getting used to this work!

He is enthusiastic about tennis.

He is keen on soccer.

I can see better. Wow!

And there are many applications of this technology.

They are keen on outdoor sports.

He is keen on science.

'Of course it was,' said the Mock Turtle. 'And how did you manage on the twelfth?'

( laughs )

Well, I'm an educator, myself.

That is what I need for my characters in my books a passionate heart.

He did an excellent job.

Nancy studied hard.

I work hard in the garden.

Now I've just thought of somethin', putting her hands on her hips.

In our country, in our communities, indifference is a growing reality.

James, the son of Alphaeus,

You can't just shag balls everyday until graduation.

Uh, very smart... and intense.

She studies hard.

He is intent on advertising himself.

You know how he is about his career.

His ambition made him work hard.

He has ambition, so he works hard.

Since he has ambitions, he works hard.

Sam is earnest about his work.

You're a dedicated man. Dry me.

Her success was due to sheer hard work.

Application to his studies brought him excellent results in the final examination.

You should work hard.

He did it with great zeal.

You work hard.

He's a bubble tech.

I resolved to study harder.

Use computers.

She entered into conversation with zeal.

They are keen on outdoor sports.