1. I am in the mountain climbing club. We learn how to climb a mountain and take exercise.

2. I am in a table tennis club. We learn how to play table tennis and play table tennis together.

3. I am in a life sports club. We learn how to live a healthy life and take exercise.

4. I am in a bowling club. We learn how to bowl and play games together.

(Would you check the sentences above and correct errors? Thank you.)

1." We learn how to climb mountains...." You are learning to climb more than one mountain.

2, 3 , 4. Okay.

However, 2 could use a pronoun to keep from repeating "table tennis" three times in a row, "...and play it together."