单项选择题
Where should you begin your research on complex and serious topics？（）
A.Online DatabasesB.LibrariesC.Google ScholarD.General Research Sites
问答题 The fire quickly spread to（A）the first floor where（B）it destroyed（C）all the equipments（D）in the language lab.
问答题 The reason（A）Tom has made great progress（B）is for（C）she has never wasted（D）her time.
问答题 I am going（A）to have my letter type（B）tomorrow if Ive got（C）everything ready（D）by then.
