单项选择题
No one can possibly recall any detail about the meeting. it is at least five years since it （）
A.had taken place B.was taken place C.tookplace D.was taking place
单项选择题 She has always（）to her father, although he did not graduate from a famous university.
单项选择题 We are told that it is（） we are born that decides our nationality.
单项选择题 She（）talking when I am watching TV.
