The old man didn’t have a rest ______ his son came back..A. after B. until C. when
We ________ a sports meeting if it is fine next Wednesday.
I think Book 6 is ________ than Book 5.
She kept _________ hard at her physics and finally caught up with us.
--- ________ you play international chess? --- No, I can’t. But I can play Chinese chess.
--- __________ are all these together? --- 425 yuan.