问题
选择题
The girl arranged to have piano lessons at the training center with her sister ________ she would stay for an hour.
A．where
B．who
C．which
D．what
答案
：A
：考查定语从句。先行词为the training center,关系代词where引导定语从句where she would stay for an hou,这个定语从句主语为she,动词为stay,是一个不及物动词，不需要宾语，故句子比较完整，使用关系副词来引导这个定语从句。故A正确。