During the past two decades, research has ________ our knowledge of daydreaming.
A、expandedA
A扩大B浮现、露出C下降D征服
英语翻译：他是公司的首席执行官,但总是平易近人。
Thefarmingmethodshavebeen________improvedwiththeinventionofthenewmachine.
Ayearlater，withthenation’seconomy________，Bush’sapprovalratingdroppedbelow40percent
AlthoughTomissatisfiedwithhisacademicachievement，hewonders_______willhappentohisfamilylife.
英语翻译：我希望我的书将阐明我们面临的复杂问题。
