问题
                    
I’d like to have visited the Palace Museum, but something unexpected _______ to my father.
                            A:had happened
B:happened
C:has happened
D:happens
                        
                        B:happened
C:has happened
D:happens
正确答案是:
                        
                        
                        
                    同类题型
                    ______ do you go to Hong Kong? — I’ve never been there. [ ]
Both of the skirts are in style this year. —Yes, but I think the green one is.
________ is waiting for you over there. He wants to say thanks to you.
Luo Yang devoted all his life _________for China Nation Aviation(中国航天).
Why not go to see the movie with Lydia?—Because I ______ it.