The reason _____ he failed the exam was _____ he had not worked hard.（）

单项选择题_____ to get there on time， we walked as fast as we could.（）

A. hoping
B. to hope
C. hoped
D. being hoped

多项选择题实行房地产权属登记的目的是（）

A.加强我国的房地产可能性管理
B.维护房地产市场秩序
C.为城市规划、建设、管理提供科学依据
D.保障房地产权利人的合法权益