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I don’t understand what the engineer means, but I’ve got ______ rough idea of _____ project plan.

A. the; a           B. 不填; the            C. the; 不填            D. a; the

D


解析:

 第一空泛指一種粗略的想法,第二空特指是那個project 計劃而非其它計劃。

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