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 I was ; You can't ; I had12.2 The music was; The concert had just started; it began12.3 I have just come;I had; I visited12.4 I was shopping, I left; I put; I am12.5 I have graduated; I have thought; I have been organising