问题
选择题
The principal walked onto the platform and seated himself in a chair, ____ for answering questions.
A．prepared
B．being prepared
C．prepared
D．preparing
答案
答案：C
题目分析：此处prepared相当于形容词，意为：准备好了的。这里形容词短语作伴随状语。故选C。句意：校长走上讲台，坐下，准备回答问题。