ПОМОГИТЕ ПОЖАЛУЙСТА!!
Употребите глаголы в правильной форме.

12.1 Dear Alan, I hope you are well. Sorry for not writing to you sooner, but I (be) very busy lately. You (not/can) imagine what a terrible day I (have) yesterday.
12.2 Did you enjoy the open-air concert today? The music (be) good, but the weather was terrible. The concert (just/start) when suddenly, it (begin) to rain.
12.3 I (just/come) back from Japan and I (have) a nice time. I (visit) three different places and I (buy) some souvenirs.
12.4 Yesterday, while I (shop), I (leave) my purse in the supermarket. I really thought I (put) it in my bag, because I (be) always careful.
12.5 I (graduate) from the university five years ago and I (teach) science at Baker Comprehensive School since then. I (organize) extra activities for children after school for the last three years.

12.1 (be) = was; (not/can) = can't; (have) = had12.2 (be) = was; (just/start) = had just started; (begin) = began12.3 (just/come) = have just came; (have) = had; (visit) = visited; (buy) = bought12.4 (shop) = was shopping; (leave) = left; (put) = put; (be) = am12.5 (graduate) = graduated; (teach) = have taught; (organize) = have been organizing

wascouldn'thadwashas just startedbeganhave just camehadvisitedboughtshopedleftputwashave graduatedtaughtorganized