Chisō sarete arigatō.Thanks for treating me (to a meal).

Soko ni wa sara ni imi ga nai.There is no meaning in that at all.

Yume ni mo omoimasen deshita.I have never thought of this even in my dreams.

uzu no fuchi ari. Kare, Uzugawa to nazuku.There is a deep whirl / eddy pool there. As such, it is called “Uzugawa” (Eddy River).