单项选择题45（）
A．whereas B．whenever C．however D．once
多项选择题事实上,即使是设计品牌的人也无法左右品牌,他们甚至预测不出人们将如何利用它们。
填空题What’s the main difficulty in organ transplanting
填空题. to→from
填空题The struggle between the plebs and the landed families was a________feature of social life.
