English is widely used as a common language in the world.

Recently, my neuralgia has been so bad that I can't concentrate on my work.

He went to school with his new schoolbag.

It's convenient to live in a city where transportation facilities are well-developed.

I bought new clothes through mail order.

He is interested in diachronic linguistics studies.

She is still an innocent girl, with a pure heart.

She is still a virgin.

Tanzan is my best friend.

I am waiting for the train to come.