单项选择题
4, My students found the book ______; it provided them with an abundance of information on the subject.
单项选择题 She should be ______ and not make unreasonable demands.
单项选择题 He has been resisting ______ pressure to resign as the head of the organization.
单项选择题 The coming of the runways in the 1830’s ______ our society and economic life.
