OMG……英语语法= =--Could you show me the way to No.5 Middle Schoo

OMG……英语语法= =
--Could you show me the way to No.5 Middle School?
--I'm affraid I couldn't.I___never___there.
选项：A.do...go B.did...go C.have...been D.had...been
Mr.Black was surprised,"I___I lost my wallet."
选项：A.know B.don't know C.knew D.didn't know
ORZ刚刚把题目给打错了我擦……