a- I have forgotten you number.
b- My husband has gone to Germany on a business trip.
c- Tom has chosen the best writers.
d- Mike and Bruce have broken the window.
e- I have cooked something special for you.
f- Martha has not/hasn't bought a new car yet.
g- We have not/haven't played football since we were children.
h- Where have you been?
i- I have learnt this recipe by heart.
j- We have been here before.