It's difficult to remember new words.

His native language is Spanish.

He can speak American English fluently.

Our company was able to succeed in a big project by federating with other small companies.

People from all over the country gathered to celebrate the emperor's birth.

I will make even more effort from now on.

My grandmother needs home nursing.

He passed the exam.

I bought a new Japanese-Japanese dictionary.

He became a wealthy person by succeeding in business.