Complete with: on, at (x2), to, in. Berik isn't keen team sports, so he prefers to do athletics.2 Exercising at a gym can be boring, but it's worth it the end.3 Halima is hopeless ball sports, but she's a very good gymnast.4 You'll be amazed the low membership fees at this gym!5 Drinking energy drinks can actually be harmful your health.​