Time spent in a bookstore can be enjoyable, if you 【S1】______ are a book-lover or merely there to buy a book as a present. You may even have entered the shop just to find shelters away a sudden shower. 【S2】______ Whatever the reasons, you can soon become totally unaware of your surroundings. The desire to pick up a book with an attractive dust-jacket is irresistible, even 【S3】______ this method of selection ought not to be followed, as you might end up with a rather bored book. You soon 【S4】______ become engrossed in some book or other, and usually it is only much later that you realise you have spent far far 【S5】______ much time there and must dash off to keep some forgotten appointment without buying a book, of course. This opportunity to escape the realities of everyday life is, I think, the main attraction of a bookshop. There are not many places where it is impossible to do 【S6】______ this. A music shop is very much like a bookshop. You can wander round such places to your heart's content. If it is a good shop, no assistant will approach to you with 【S7】______ the inevitable greeting: 'Can I help you, sir?' You needn't buy anything if you don't want. In a bookshop an assistant should remain the background until you 【S8】______ have finished browsing. Then, only then, are his services necessary. Of course, you may want to find out where a particular section is, since when he has led you 【S9】______ there, the assistant should retire discreetly and look as 【S10】______ he is not interested in selling a single book. 【S1】