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

Clothing made of man-made materials has advantage over _________ made of natural ones like cotton, wool or silk.

—Wow! You’ve got so many clothes． —But _____ of them are in fashion now．

-We have worked day and night for a whole month.--Why don’t you bring ______ to the attention that a good rest is badly needed?

–Do you think they have as many books as they’ve described? --Well, in my opinion, they have few books, if ______.