My biorhythm is disturbed, and I've been tired lately.

He is using a metronome to practice the piano.

He always speaks in polite language.

Momoe is my best friend.

I think there is a contradiction in his story.

In this chemical reaction, bromine is necessary.

Leitrim is a beautiful county in Ireland.

The tiger is a strong and brave animal.

We practice natural farming without using chemical fertilizers.

He used to live as a thief in the past.