Kumon studies update (end of February)

I have to admit that I did not touch much of my Kumon sheets during my short stay in Switzerland last January, including flight time. The previous year, because DH could not join me, I ended up spending a lot of time by myself. This time, the trip was really short, DH was there and my family eager to spend as much time as possible with us.
After our return to Japan, I was terribly jet-lagged, caught a terrible cold that lasted 2 weeks and was really busy at work. As a consequence, I had a hard time going back to regular study of Kumon sheets.
There were some changes some weeks ago, not really sure why. At my level (BII-50-100---you can see some samples here) now, each chapter is a story. I can get a more or less clear image of all the stories, except one. When things make sense, it is easier to study...
And the fact that serious intensive studies of Japanese will start in about one month is another trigger, I guess.... Talking about that, I have to do some revision of the material used recently by the students, so that I am à jour.