put the verds in brackets into the Past Simple or Past Perfect Tense

1) When I(to return)home I (to find) a note from my friend on the front door. 2) My friend (to phone)me after I (to leave) the house. 3) The train (to arrive) before we (to buy) the tickets. 4) Angela(to say) that she (already to meet) that woman at some party. 5) Eric (to remember) that he(not to tell) his friend about the changes in the school timetable. 6) Mrs Adams(to put) the presents under the New Year Tree after her children (to fall) asleep. 7) The performance (to begin) when they (to enter) the Hall. 8) Den(to tell) me that he (not to find) any information on the subject yet. 9) Sally(to switch off) the TV set and (to go) to bed. 10) The children (to eat) all the sweets before their parents (to return) from work.

(Помгите... пожалуйста)

1. returned, found

2. phoned, had left

3. had arrived, bought

4. said, had already met

5. remembered, hadn't told

6. put, had fallen

7. began, entered

8. told, hadn't found

9. swithed off, went

10. had eaten, returned