( )my father was cooking supper when I _.

( )my father was cooking supper when I _. My parents were having supper when I _ back home. My mother was cooking when my father came back 用While改写 my mother was cooking dinner when my father( )in 填什么啊came wa I am very happy when my father _(go) out My father was reading newspapers__my mother was cooking 填whe Yesterday I ________ when I was cooking.A.had my finger cut 请问这一题为什么选AYesterday I ________ when I was cooking. A. had my I had cut my finger when I was cooking 这里主句为什么要用过去完成时? when I reached home,my parents _ their supper.A.are having B My father taught me math when I was young my father died when i was a few months old