Put the verbs into the correct form (present perfect simple).

I (not / work) today.
We (buy) a new lamp.
We (not / plan) our holiday yet.
Where (be / you) ?
He (write) five letters.
She (not / see) him for a long time.
(be / you) at school?
School (not / start) yet.
(speak / he) to his boss?
No, he (have / not) the time yet.