Choose the letter A, B, C or D to complete the passage below

What do you do if you want to ___(1)___ a book in a library? If you know the author’s ___(2)___, go to the author catalogue. Find the title of the book ___(3)___ check the shelf mark. Make a note of this before you look ___(4)___ the appropriate shelf. If you do not know the author’s name, go to the ___(5)___ catalogue. If there ___(6)___ no title catalogue in the library, go to the subject catalogue. Check all the titles which are under the ___(7)___ you want. Then check the appropriate card, as with the author catalogue. Next look for the book on the shelf. Let the librarian stamp it ___(8)___ you take it out of the library. If the book isn’t on the shelf, ask the librarian to get it for you.