We (buy) a new lamp
have bought
He (write) 5 letters
has written
Where (you / be) ?
have you been
She (not/ see) him for a very long time
hasn't seen
We (not/ plan) our holidays yet
haven't planned
(he /speak) to his boss?
has he spoken
(you / be) at school?
Have you been
School ( not/ started ) yet
hasn't started