填空题 Questions 21-25 Complete the sentences below. Write NO MORE THAN THREE WORDS for each answer.

填空题 Students will be invited to visit the new library on 1.

填空题 The students can use the title of the book, the author's name, or 1to locate a book.

填空题 The 1, a sequence of letters and numbers, is a code indicating the location of the book.

填空题 Students are not allowed to keep a 1for a long time.

填空题 The librarian is responsible for telling students 1and the issue of books.