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.

What do you do if you want to (1)______ a book in a library?