基本信息
unit 2 working the land ⅰ.语法单句填空 1．some necessary equipment as well as food and clothes ________(be) sent to the disasterhit area since the floods occurred. 答案：has benn 考查主谓一致。主语是some necessary equipment，equipment为不可数名词，所以谓语动词用单数形式。时间状语为since＋过去时，所以用完成时。 2．to be mentally healthy, you need t
