Ryoji is my best friend.

The consul is working to protect the interests of his country.

I am collecting the materials needed for this project.

This car uses electricity as fuel.

In this classical literature, the technique of kakarimusubi is skillfully used.

I know this is sudden, but could you arrange a time for me to meet the president?

The expansion of this problem should be limited.

I know this is sudden, but could you arrange a time for me to meet with the president?

I enjoyed chatting with him while drinking coffee.

I used the air conditioner remote to adjust the room's temperature.