Put verbs in Past Simple and Past Perfect.
1 When he (to come) home, his mother already (to cook) dinner. 2 My sister (to take) my dress which I (to buy) in Morocco. 3. I (to work) on the computer which I (to buy) a week ago. 4 They (to sell) their house before they (to buy) the new one. 5. Yesterday I (to wake up), (to open) my eyes and (to remember) what I (to ns do) the day be fore.​