在新概念英语2册非选择题中有一道题
“ ' What you ___(do)?' my landlady asked.
'I____（leave),Mrs.Lynch.'I answered.
'Why you ___(leave)?'she asked.'you have been here only a week.' " 请问正确答案是什么?我还没学过有这结构的,如果知道请详细说明语法,谢谢