Past Simple или Past Perfect

Question

Past Simple или Past Perfect 
1.When father (to return) from,work, we already (to do) our homework. 
2.When I (to come) home, mother already (to cook) diner. 
3.Tom (to return) from the cinema by five o'clock. 
4.Ann (to tell) me that she ( to see) an interesting film. 
5.Nick (to show) the teacher the picture which he (to draw) 
6.When I (to wake) up yesterday, father already (to do) to work.

Дарья Савицкая · Accepted Answer

1.When father returned from,work, we had already done our homework. 
2.When I came home, mother had already cooked diner. 
3.Tom had returned from the cinema by five o'clock. 
4.Ann told me that she had seen an interesting film. 
5.Nick showed the teacher the picture which he had drawn. 
6.When I woke up yesterday, father had already gone to work.