What is Mom cooking in the kitchen? — Fish, I guess. How nice it _______!

He recognized me _____ he saw me.

Listen! Someone is playing ______ piano.—Wow! ______beautiful music! I like it very much

_______ did you start studying English ? —–Five years ago.

Have you heard of the story of a bowl of huntun in Changchun?— Sure. _______ people were moved on the Internet.