模仿例句使用before改写下列句子.

题目

模仿例句使用before改写下列句子.
example:Did you go to see the teacher? ---- yes,but I made an appointment first.
               I had made an appointment before I went to see the teacher.
Did she go shopping --- yes,but she finished her work first.
Did she open the window? ------- yes,but she closed the door first.
Did joan sweep the floor? ------ yes,but she washed the dishes first.
Did you go to the cinema? ------ yes,but I wrote a letter first.
Did your boss go home? ------ yes,but he went to the hairdresser's first.

答案

She had finished her work before she went shopping.
She had closed the door before she opened the window.
Joan had washed the dishes before she swept the floor.
I had wrtitten a letter before I went to the cinema.
My boss had gone to the hairdresser's before he went home.