You ____ ____ a teacher.
下框材料选自民国二十二年第二期《申报月刊》。这阐述的“统制经济”思想在当时的中国影响较大,其客观因素是
(____) They're on Shelf A.
(____) Well, let me help you.
(____) But I can't find the book.
(____) Where are the books about sports, please?
(____) Do you know the name of the book?
地球上一个昼夜更替的周期为( )