1-I just had gotten home when the rain started
2-Gina just had got dressed when her cell phone rang
3-When Tina got to the grocer's they already had closed
4-It had rained before we went out for a walk
5-The principal left school after she had put all the papers in order
6-Alice left on a trip as soon as she had gotten her exam results
7-By the time the guests arrived, mother had prepared all the food and drinks