She was collecting shells on the beach.

He belongs to the Japanese navy.

The seawater of this beach is very clean.

He belongs to the upper class of society.

It's not appropriate for me to intervene in his problem.

We are working hard to improve our service.

We are working on the development of new software.

We are developing a new software.

I commute to work every morning by high-speed train.

The resolution of this monitor is very high.