Is this museum ___ you visited a few days ago?　　　A.where　B.t

Is this museum ___ you visited a few days ago?　　　A.where　B.t Is this museum ___ you visited a few days ago?　　A.where　B.th this museum is ______ you visited a few days ago A.where B.t 例1.Is this museum ___ you visited a few days age?A.where B.t This museum is ___ you visited a few days ago. Is this museum ___ you visited a few days ago? is this museum you visited a few days ago?a.where b.that c.o This museum is ___ you visited a few days age?A.where B.that Is this museum ___ you visited a few days age? 　 A. where　B. Is this museum ----you visited a few days ago? Is this museum ___ you visited a few days ago?为什么不可以填选关系代词 t 如题：Is this museum ___ you visited a few days ago?