Задать вопросы к предложениям.. 1) i'll take some medicine as i have a headache 2) they have been working on this report for a month 3) my friend have visited exhibition this week 4) ske is cooking an apple pie now

1)If you have a headache,what will you do? 2)How long they were working on this report? 3)What your friend had been doing on this week? 4)what she is cooking now?