Then professor walked onto the platform and seated himself in a chair, ______ for answering question

题目简介

Then professor walked onto the platform and seated himself in a chair, ______ for answering questions.

A．had prepared

B．being prepared

C．preparing

D．prepared

题型：单选题难度：中档来源：不详

试题分析：句意：教授走上讲台，坐在椅子上，准备回答问题，这里使用了be prepared for…为…做好了准备，用过去分词做状语，所以选D。