I suggested that they should talk to Japanese more and try to talk to native Japanese speakers in a group conversation.
Zac and I set a group conversation for us. We talked to a Japanese guy who speaks in kansai accent.( thank you so much Sine-san to co-operate my idea!) And then we talked to a Japanese woman who speaks in common accent.( thank you also Yuming-san!) Last night we talked with Japanese woman who speaks in Kyusho accent and Yuming-san. ( thank you also to-ko-mom-san!)
I believe that group conversations with native Japanese speakers help their hearing skills and speaking skills improve to them.
Today I will also set a group conversation for my best friend Zac.
We will talk to another Japanese guy who speaks with very deep voice. ( thank you soooooooo much! Jiro-san!!!)
I like knowing my friends improving and want to do my best for them.
I want to improve our learning language each other at the same time.
Therefore, we talk one on one everyday and sometimes talk in a group conversation.