Образуйте present perfect
1. she (arrive) just at the station.
2. my friends (be) to italy for a month.
3. boris (not do) his homework yet.
4. i (pay) the taxes for 2017 already.
5. we (come back) just from india.
6. i (see) a mouse in my room!
7. you (pass) just the exam.
8. jane (buy) a new t-shirt for me.
9. jack (have) this smartphone for two years.
10. jessica and pamela (know) each other since childhood.​