says, is said, said; an, a, theI don’t know her, but it ______th

says, is said, said; an, a, the
I don’t know her, but it ______that she has ______encyclopedic knowledge of drugs.
【正确答案】：is said / an
【题目解析】：宾语是从句时，一般也没有相应的被动结构，当然如果用it来替代宾语从句，其被动态是可以接受的。