问题
选择题
—Bob! How is your project? I heard you started it last Friday, right?—Oh! I_______ for it. But I haven’t decided when to do it.
A．have prepared
B．had prepared
C．have been preparing
D．was preparing
答案
答案：C
本句的含义为你的课题项目做的如何，我听说你上个星期五就开始了，对吗？我一直为此作准备，但我还没有决定何时开始，本题回答语表示现在完成进行，结构为have been+现在分词，故本题选C。