Помогите пожалуйста , даю 20 баллов :)Open the brackets and put

Помогите пожалуйста , даю 20 баллов :)

Open the brackets and put the verbs into Past Simple or Past Perfect.

1) Helen ________________________________________ (to return) from the cinema at 6 p.m.

2) I ________________________________________ (to finish) my homework by eight oclock.

3) He __________________________ (to think) that he ________________ (to lose) the money.

4) Ann ______________ (to tell) me that she ___________________ (to see) an interesting film.

5) When I _______________ (to come) home, mother ______________ (not to cook) dinner yet.

Заблаговременно СПАСИБО :D