Had a level check and trial lesson at Berlitz Shibuya. It was not easy but I think it was a good experience. I didn't remember the word Imperial Residence but now I've learned it. Also, the difficult grammer was causative sentences. It seemed I was able to speak them accurately. I dropped into the Bic Camera neaby and checked wireless LAN routers. I think I will buy the new and small one tomorrow. I am happy that the long LAN cable will be cleared away.