题目

Kate worked late in the evening to finish her report ________ her boss could read it the next morning. A．so that               B．because C．before                D．or else   答案： A 句意是：凯特工作到深夜写完报道，这样她的老板第二天早晨就可以读到它了。so that用来引导目的状语从句。

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