Using subordination:
She went to Shanghai. She leased an apartment in Shanghai.
【正确答案】:She went to Shanghai where she leased an apartment.
【题目解析】:Where引导关系从句时,其作为关系副词,在关系从句中做地点状语,且其前有一个表地点的先行词。此时,where可以转换成“in + which”的结构。where引导的关系从句只能位于主句之后或句中,不能位于句首。