题目

分类是一种行之有效、简单易行的科学方法。某同学用下表对所学知识进行分类。下列分类错误的是                              （    ）                                                  答案：D—I find ________ hard for me ________ the work in such a short time.—I’m afraid not, but you can try your best to do it.A．that; to finish B．it; finish C．it’s; to finish D．it; finishing