Dưới đây là các từ đúng cho từng chỗ trống trong văn bản:

35. A. **buy**
36. C. **name**
37. D. **find**
38. B. **on**
39. C. **index**
40. D. **look**
41. A. **subject**
42. B. **before**

Văn bản hoàn chỉnh sẽ như sau:

What do you do if you want to (35) **buy** a book in a library? If you know the author’s (36) **name**, go to the author catalogue. Find the title of the book (37) **find** check the shelf mark. Make a note of this before you look (38) **on** the appropriate shelf. If you do not know the author’s name, go to the (39) **index** catalogue. If there (40) **look** no title catalogue in the library, go to the subject catalogue. Check all the titles which are under the (41) **subject** 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 (42) **before** you take it out of the library. If the book isn’t on the shelf, ask the librarian to get it for you.