单项选择题
He prefers American examples ______ British ones when he is comparing educational systems.
单项选择题 After five years of hard working, he was promoted as a division manager in ______ of thirty employees.
单项选择题 If you have gone through such a disaster, the experience will stay with you for the ______ of your life.
单项选择题 There is not much time left; so I’ll tell you about it ______.
