YOU SAID:
Quite a lot has happened since I was away
INTO JAPANESE
私が離れてからかなりのことが起こった
BACK INTO ENGLISH
A lot has happened since I left
INTO JAPANESE
離れてから色々あった
BACK INTO ENGLISH
There have been various things since I left
INTO JAPANESE
離れてから色々ありました
BACK INTO ENGLISH
There have been various things since I left
Come on, you can do better than that.