Kotaro is my best friend.

Information technology plays a very important role in modern society.

The advancement of science and technology has greatly changed our lives.

He is good at solving technical problems.

He is a very excellent technician.

It's important to believe in yourself.

She uploaded a selfie to Instagram.

She took a selfie and uploaded the photo to social media.

He should stop his selfish behavior.

Since that's his own concern, we better not interfere.