It is vital that the work _______ in time.
A、isdoneB
这里主语从句中应该用虚拟语气，从句谓语用should+动词原形的形式，should可以省略。句意：及时完成这项工作是极其重要的。
Thevehiclewastravelingatspeeds________90milesperhour.
Ayearlater，withthenation’seconomy________，Bush’sapprovalratingdroppedbelow40percent
英语翻译：我不明白她如何能在一天之内做那么多事情。
Thestudentsarerequiredto________themainideasofthearticleintheirownwords.
Itisvitalthatthework_______intime.
