אפשר עזרה, בבקשה??? לאנשים שטובים באנגלית

5. Mr. and Mrs. Thomas _______________ (be) married for ten years.
6. My father took my computer yesterday, and he _______________ (already return).
7. Mary _______________ (write) several letters to her parents since she left home.
8. Matt is waiting in the restaurant for his girlfriend but she _______________ (not arrive) yet.
9. They _______________ (finished) all their homework already
10. It _______________ (not stop) snowing since last night.