问题
选择题
Her new book is about a murder mystery ________ on actual murders that took place in Florida several years ago.
A．having been based
B．to be based
C．based
D．having based
答案
答案：C
考查过去分词短语作后置定语。 be based on 以什么为基础，句意:她的新书是关于一本神秘谋杀的书，它是以几年前发生在佛罗里达的实际的谋杀案为基础的。故选C。