11. These flowers are dying. You ______haven't watered____ (not/ water) them for ages.

12. Mai _____has lost_____ (lose)     her keys, so she can’t get into the house.

13. I’m afraid I _______haven't finshed___ (not/ finish) typing those letters yet. I _____have been dealing_____ (deal) with customers all morning.

14. A: What _____does your father do_____ (your father/ do)?

B: He ______is____ (be) an architect but he isn't working at the moment.

15. A: ______Have you ever seen____ (you/ ever/ see) a lion?

B: Yes, I _____have seen_____ (see) it since I was a child.