Use the past perfect passive forms. model: table/lay the table had been laid before mother came. 1.the pizza/send for 2.the flowers/water 3.the cake/make 4.the bread/buy 5.the guest/take care of 6.the dining-room/air

The pizza had been sent for  before guests went away
The flowers had been watered before I went to sleep
The cake had been made before I met my friends
The bread had been bought I read the story
The guest had been taken care of my pets before I came back home
The dining-room had been aired  before my parents arrived