I had read the newspaper by 6 o'clock
She had cut the pie when they came
Her mother had changed her mind before I phoned
The students had shaken hands when they came
We had cleaned the room before he returned
He had broken the cups by that time
She had read the newspaper before I phoned
I had take out the garbage when they came
She had changed her mind before I phoned
Her mother had broken the cups by that time