My mother was busy preparing dinner in the kitchen（ ） my fat

My mother was busy preparing dinner in the kitchen（ ） my fat My father ( cooks dinner )in the kitchen My mother is cooking dinner in the kitchen cabinet .用in the 完形填空My mother is ( )cooking dinner in kitchen My mother is busy（?）dinner I was doing my homework,my mother was cooking in the kitchen when got my home ,my mother was cooking in the kitchen为什么一定要 My mother was in the kitchen when the UFO was landed my mother was in the kitchen 为什么要加一个was? When my father come back,my mother in the kitchen my mother is making dinner in the( ) My mother was -------(clean) up the kitchen this morning.