—Mary，new copies of Harry Potter are on sale now． —Great! Let’s go and buy       this afternoon．

一 Have you figured out how much the trip will cost?—$4,000, or   like that.

______ professional violinist practises for several hours a day , but ______ violinist has his own way of playing the Beethoven concert . 

— There is still a copy of the book in the library. Will you go and borrow __________?— No, I’d rather buy __________ in the bookstore. 

 ----Are there any copies left in the book store?----Sorry. There are ____ if ______.