He cooked using a gas stove.

He believes in the geocentric theory.

Global warming is a big issue that affects all of us.

A terrestrial planet may have an environment similar to Earth.

He is an expert in geophysics.

After many long years, he finally achieved his goal.

His gaze was scary.

He is a liar, so it's better not to believe his words.

I went to the gym every day for one month.

What month is your birthday?