This hotel has a gym and a swimming pool. ✬

We played basketball in the gym. ✬

I work out in a gym two or three times a week. ✬

There are a lot of students in the gym. ✬

Are they in the gym? ✬

I'm sorry, but I have to go to the gym. ✬

I got to know my current girlfriend at the gym. ✬

She has spent hours at the gym trying to lose weight. ✬

Tom works out in a gym near his house. ✬

Tom should go to the gym. ✬