A new approach is needed to solve this perpetual problem.

His house has a very modern design.

His secondary role greatly contributed to the success of the team.

I think his story is nothing but lies.

The Eighth Route Army played an active role in China's war against Japan.

In order to maintain health, it is important to eat until you are eight parts (out of ten) full.

I will hold my birthday party on the eighteenth.

He drew an octadecagon shape.

My birthday is on the twenty-eighth.

He is writing a thesis on the octovocalic theory.