I am working hard on studying every day.

He was playing by swinging the tree branch.

We must respect the freedom of religion.

He acted according to my instructions one by one.

This era was a turbulent era.

An ovum is a female reproductive cell.

She is a twin sister.

Arashi is my best friend.

I was reading a book under the Koelreuteria paniculata tree.

He grabbed the handrail when he went up the stairs.