①は....
Bill has lived in Japan for ten years, so his Japanese is very good.
②は....
My little brothers were excited ti see the snow because they had never seen snow before.
③は....
Do you think Japanese society has changed in the last ten years?
だと思います!!(^^;)
いえいえ。お役に立てれば嬉しいです(^^)
ありがとうございます。