Exercise 1
Have made
Has started
Has finished
Haven’t seen
Have been
Has watched
Have lost
Have seen
Has broken
Has been
Have I left
Have you visited
Exercise 2
2. They have gone to Scotland
3. We have read that boom
4. He has lived here for three years
5. You have known David for ten years
6. I have lost my keys
Exercise 3
1. I haven’t studied French
2. They haven’t gone to Scotland
3. We haven’t read that boom
4. He hasn’t lived here for three years
5. You haven’t known David for ten years
6. I haven’t lost my keys
