题目内容：

is this museum the one__D__your friends visited last Monday 选D,为什么,
A.who B.where C.in which D./

优质解答

D 其实是that,做宾语,省略掉了,你可以还原成陈述句,
this museum is the one (,that 不填） your friends visited last Monday
由于先行词是the one,要么不填,要么只能填that,还不能用which