大小写我就不管了哈
1.do you remember what you was doing then?
2.were you in the car when i called you yesterday?
3.this case happened before most of you were born.
4.the mother was shopping in the mall.
5.one day ,bethoven heard someone playing the piano when he was walking
楼上的竟然完全复制我的,很不厚道啊,不过我一开始有个错误也被你复制过去了