Conjugation present perfect:
1.We(buy)...a new lamp.
2.We(not/plan)......our holiday yet.
3.Where(be/you)?
4.He (write)......five letters.
5.She (not/see) ..... him for a long time.
6.(be/you).....at school?
7.School(not/start)...yet
8.(speak/he)...to his boss?