1 I have just got a letter from my friend.
2 I think I have already done a lot of important things in my life.
3 Jake has finished his homework at 6 pm. It took him an hour to do it.
4 Nelly has finished her task yet.
5 I read a lot when I was a schoolboy.
6 Steve has read this book yet.
7 Did you watch the football match yesterday?
8 My mother has done the shopping today.