The new house is made of concrete.

Mr. Clinton is a former president of the United States.

They will never remarry after they divorced. Because 'once a married couple divorce, they can't get back together', as the proverb says.

He solved the problem on his own.

Strong interaction is one of the four fundamental forces in particle physics.

He is a devout Christian.

Okurigana is an important element in understanding how to write in Japanese.

This building is made of concrete.

In Roman mythology, Mercury is considered the patron god of merchants.

Merry Christmas, everyone! I hope this year will be a good one for you.