Откройте скобки используя Past Simple или Past Perfect.
Ann (to do) her homework before Mary (to phone) her.
My father (to repair) his car after i (to come) home from school.
We (to visit) our Granny by 6 o'clock.
When he (to enter) the house he (to understand) that somebody already (to be) there.
After he (to write) a letter he (to go) to the post-office.
Before we (to start) travelling we (to buy) all necessary things.

had cleaned; phonedrepaired; had comehad visitedentered; understood; had beenhad written; wentstarted; had bought