2) I think the best pet is a dog , because dog very friendly , and it's very good pet.
3)More interesting is keeping pets , because you can play with them.
4)People want to have friends , because , if you will have a lot of friends , you will be sociable person , with friends you can play , talk with them , and it's very good to have friends!
5)People go to museums and galleries, because we must know something about our culture , we must be clever.