1. watchTV, go for a walk, listen to music, play computer games, do my homework, ride a bike, climb trees.
2. I watch TV with my friends. We will go for a walk tomorrow. I like listen to music. He always plays computer games. I am doing my homework now. She is not riding a bike now. Monkeys usually climb trees.
3. 1). with, 2).together, 3).with, 4).together, 5). together, 6).with, 7).together.