The summer vacation ended in the blink of an eye.

He successfully finished the project.

Ryoko is my best friend.

It's hard to say, but I think you're wrong.

Everyone, have a good New Year.

Have sweet dreams!

He always used to say, 'It's easy to say, but hard to do.'

He is good at expressing his feelings well.

This book is very good.

Vitamin B12 is an important nutrient for maintaining the health of the nervous system.