横线上怎么填?
2.关系代词作宾语时,可放在介词后.但当关系代词是that时,则不能放在介词后.eg.ThisisthehouseinwhichLuXunoncelived
=Thisisthehouse__________LuXunoncelivedin.
=Thisisthehouse_________LuXunoncelivedin
=Thisisthehouse_________LuXunoncelived.