27. I was so busy last year that I was almost mad. So I spent _______ I had with my family last month after I finished the project.

A．what little time

B．little what time

C．that little time

D．little that time

在UML提供的图中，可以采用 (6) 对逻辑数据库模式建模； (7) 用于接口、类和协作的行为建模，并强调对象行为的时间顺序。