She goes to the tanning parlour every week.

He is fifty years old and still full of energy.

My birthday is on the fifteenth.

In chemistry class, I learned about the process of polymerization.

Through this chemical reaction, monomers polymerize to form polymers.

My room is twenty-five square meters.

Doublet is an important concept in linguistics.

During the war, he continued to support his family on the home front.

He was staring at the flame in the campfire.

When the sun rises, a new day begins.