The development of his language skills is progressing at an astonishing speed.

His son has a developmental disability, but he is doing his best at a special needs school.

In order to overcome that impediment, it is necessary to do your best.

He is a famous author and a person who is respected by many people.

We must respect the rights of people with disabilities.

This area has been developing rapidly in recent years.

This region has seen remarkable economic development in recent years.

His plan was obstructed by the sudden rain.

Mr. Sugai is my best friend.

I gargle every day to prevent catching a cold.