---Do you think Peter is free today?. He is really busy preparing(准备) for the coming t

问题补充：

---Do you think Peter is free today?

--- . He is really busy preparing(准备) for the coming test these days.

A. Of course

B. I have an idea

C. 1 m afraid so

D. I don t think so

答案：

A. Of course

B. I have an idea

C. 1 m afraid so

(答案→)D. I don t think so

解析：Of course当然了；I have an idea我知道；1 m afraid so恐怕如此；I don t think so我不这么认为。句意：你认为彼得今天有空吗？根据下文，这些天他真的正在准备来临的考试。可知前文为否定回应，故选D。