I cook for family>>I have cooked for my family.

1. They have stood near a tree.

2. We have eaten at home.

3. The dancers have walked slowly.

4. I have brushed my teeth.

1. They are standing near a tree >> They have stood near a tree
2. We eat at home >> We have eaten at home
3. The dancers walk slowly >> The dancer have walked slowly
4. I bursh my teeth >> I have brushed my teeth