tolobg isikan yg belum saya jawab

12. B
13. A
15. C
17. A
18. C

14. harusnya B

12.d
don't mention it
13.c.My pleasure
15.c.thanks.that's very kind of you.
17.b.yes i can't do it
18.c.thanks for the ride ....Im sorry if your question is wrong...