1-4 is correct.
I think these are the correct answers for the rest.
5. Ser
6. Ser
7. Estar
8. Ser
9. Ser
10. Ser
11. Ser
12. Estar
13. Estar
14. Ser
15. Ser
The right answer is C which means talked in the phone
The answer is
B. Que bebistes
D. Examinando. It is the only one that makes sense.