Ответ:

2.A: Has your friend Sam picked up your tickets yet?

B:No,but I already bought them.

3.A:Have you decided to take phone or table yet?

B:Yes,I have just packed it

4.A:has your friend Sam booked taxi yet?

B:No,but I haven't got the number yet.

5.A:have you written down your emergency number yet?

B:Yes, I have just written it to the notepaper.