一生懸命 (with all one's might)

It's basic manners to give your all to a game that someone made with their whole heart, you know? Hitting the pause button would be rude to the game!

If you work hard, your dream of becoming a baseball player will come true.

Mom tells me not to study too hard.

She doesn't study as hard as her older sister.

She worked her hardest for her family.

She studied her heart out and passed the exam.

She had to study hard to catch up with her classmates.

She must have been studying hard.

She studied hard, but failed the exam.

Despite her low pay, she works hard at the company.

She studies as hard as any student in the class.

It's a great company. The president's a real ace, and the employees are all giving it their all.

To get into a good university, all you have to do is study hard.

Study hard so you don't fail.

You'll have to study even harder next year.

Yumi studies English hard.

I studied English hard every day, but didn't learn much.

She studied hard so as not to fail the exam.

She worked hard for her children.

She works just as hard as her brothers do.

She had to study hard to catch up with her classmates.

She has to study hard to catch up with the rest of her class.

She's working hard.

She poured all her effort into writing the letter.

She gave it her all but failed.

She studied hard, but she didn't pass the exam.

She worked hard to make up for the time she'd lost.

She ran with all her might.

She explained the product with everything she had.

She's very smart, and on top of that, she studies hard.